Browser has been Hijacked? / Google searches being Redirected

hi there, i've only recently discovered that my browser has possibly been hijacked. whenever i search terms in google and click on the resulting links, i will be redirected to a number of different websites. it is proving to be really annoying for me. i would greatly appreciate it if someone could help me sort this problem out.

I've attached my HJT log to this thread.

Thanks for your time!

We would like to see your SpySweeper and Symantec scans...

Spy Sweeper:

Quick Sweep has completed. Elapsed time 00:09:40
Traces Found: 0
None

Norton 360:

Scan Stats:
Scan Time: 334 seconds
Counts:
Total items scanned: 4,139
- Files & Directories: 979
- Registry Entries: 343
- Processes & Start-up Items: 2,681
- Network & Browser Items: 129
- Other: 7

Total security risks detected: 1
Total items resolved: 0
Total items that require attention: 1

Resolved Threats:


Unresolved Threats:
Packed.Generic.238
Virus ID: 23997
Type: Anomaly
Risk: High (High Stealth, High Removal, High Performance, High Privacy)
Categories: Heuristic Virus
State: Remove Failed
-----------
1 File
globalroot\systemroot\system32\geyekrgodajbhl.dll
1 Browser Cache


I've run MBAM and SpybotS&D but none of them are able to detect or even remove this "packed generic 238". norton can detect it but then says that it can only be removed "manually", which i do not know how to do.