Well my sister's laptop has been functioning very slow and everything doesn't run smoothly as it used to for her. Although she said she deleted about 4GB of junk with CCleaner and other programs but it still seems as slow as ever. Is there something that can be done to resolve this problem?

CCleaner is great for removing junk files most of which just sit and take up space. But most of those files just take up space and the others generally tend to be just a small slice of the performance slow-down problem that occurs over time.. You have lots of things to learn about and then to-do list to address the performance issue.(And advice: Don't try tweaking services unless you think you know what you're doing and how to recover if you made a mistake)

And I'm guessing she's probably running XP on that laptop? Here's a variety of articles to help on the subject

Make Windows XP Run Faster!

Optimize XP

Startup Applications - Do You Need All of Them?

In addition to the advise give by LookinAround, I`d like to do a quick check for malware.

Go and read this thread HERE and post a HJT log as an attachment into this thread.

Regards Howard

Well sorry it took a few days but here is the log.

Well still waiting for a reply.

Open HijackThis and select Do a system scan only. place a check mark next to:

O2 - BHO: (no name) - {549B5CA7-4A86-11D7-A4DF-000874180BB3} - (no file)
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: (no name) - {F467D265-1FD9-4635-AE5B-CD4749B061E4} - C:\WINDOWS\Web\sisibn.dll (file missing)
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O9 - Extra button: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyPoker\PartyPoker.exe (file missing)
O9 - Extra 'Tools' menuitem: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyPoker\PartyPoker.exe (file missing)
O20 - Winlogon Notify: sisibn - C:\WINDOWS\Web\sisibn.dll (file missing)

Close all windows and click Fix checked

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Enable Viewing Of Hidden System Files & Folders

1. Right Click Start.
2. Select Control Panel.
3. Select the Tools menu and click Folder Options.
4. Select the View Tab.
5. Under the Hidden files and folders heading select Show hidden files and folders.
6. Uncheck the Hide extensions for known file types option.
7. Uncheck the Hide protected operating system files (recommended) option.
8. Click Apply.
9. Click OK.

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Go to Add/Remove Programs.

Find "My Web Search" in the list of installed programs and uninstall it.

Look for any of the following and uninstall them also.

My Web Search
My Way Speedbar
Search Assistant

Next, open My Computer from the desktop.

Go to C > Program Files to look for and delete these files/folders.

FunWebProducts
MyWebSearch

Restart the computer.

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Download Superantispyware (SAS) SUPERAntispyware Free Edition

Install it and double-click the icon on your desktop to run it.
* It will ask if you want to Update the program definitions, click Yes.
* Under Configuration and Preferences, click the Preferences button.
* Click the Scanning Control tab.
* Under Scanner Options make sure the following are checked:
+ Close browsers before scanning
+ Scan for tracking cookies
+ Terminate memory threats before quarantining.
+ Please leave the others unchecked.
+ Click the Close button to leave the control center screen.
* On the main screen, under Scan for Harmful Software click Scan your computer.
* On the left check C:\Fixed Drive.
* On the right, under Complete Scan, choose Perform Complete Scan.
* Click Next to start the scan. Please be patient while it scans your computer.
* After the scan is complete a summary box will appear. Click OK.
* Make sure everything in the white box has a check next to it, then click Next.
* It will quarantine what it found and if it asks if you want to reboot, click Yes.
* To retrieve the removal information please do the following:
+ After reboot, double-click the SUPERAntiSpyware icon on your desktop.
+ Click Preferences. Click the Statistics/Logs tab.
+ Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
+ It will open in your default text editor (such as Notepad/Wordpad).
+ Save the notepad file to your desktop by clicking (in notepad) "File" "Save As"
* Save the log somewhere you can easily find it. (normally the desktop)
* Click close and close again to exit the program.
* Please add the log as an attachment along with a new HijackThis log in the next post.

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Run HijackThis and save a new scan log only after SAS is done scanning and cleaning.

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Next post please attach
SUPERAntiSpyware log
A New HijackThis log