STOP using that bleedin' Internet Explorer!
Your version of C:\WINDOWS\SYSTEM\PSTORES.EXE is a safe one.
The R1 g.msn.com is OK, but we'll clean it up for you.
Boot in Safe Mode, see how here.
In Windows Explorer, turn on "show all files and folders, including hidden and system". See how here.
Next, open Windows Task Manager by pressing
CTRL+ALT+DELETE.
Click the
Processes tab, select the process (if there) and click
End Process for:
FmLfns.exe
Next, run a HJT scan and (if still there) place a tick-mark in the little square before:
...................................................................................................
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar =
http://g.msn.com/0SEENUS/SAOS01
O3 - Toolbar: (no name) - {62999427-33FC-4baf-9C9C-BCE6BD127F08} - (no file)
O4 - HKLM\..\Run: [FmLfns] C:\WINDOWS\SYSTEM\
FmLfns.exe -l
...................................................................................................
Now click on the
Fix Checked button in HJT. Exit HJT.
When done, from between the above dotted lines, delete the highlighted
bold file.
Rightclick IE on the desktop, select Properties, click on
Delete Cookies, and
Delete Files.
Delete ALL files and directories from: C:\WINDOWS\Temp (except files dated from TODAY).
Boot normal.