You have an annoying little trojan, a worm... please delete hijackthis from the folder where it is and follow this:
==download a fresh copy of hijackthis: http://216.180.233.162/~merijn/files/HijackThis.exe
-install it to a new folder alongside your program files.
-in that folder start HijackThis by dclicking the .exe;
-select Scan Only, place checkmarks against all the entries listed below that still exist, and then press Fix Checked.
O4 - HKCU\..\Run: [svcshare] D:\WINDOWS\system32\drivers\spoclsv.exe
Browse to this file and delete it: D:\WINDOWS\system32\drivers\spoclsv.exe
Find D:\setup.exe and delete it.
Get ATF Cleaner:
===Download this temp file cleaner from http://www.atribune.org/ccount/click.php?id=1 --click in the download window to run it, and when ATF Cleaner opens go Select all, and then Empty Selected.
Next click Firefox [if you have that browser..] at the top, Select All again, and Empty Selected again. Follow that procedure also if you have Opera.
Close ATF.
[If you wish, save ATF Cleaner to your desktop or a cleaning folder somewhere as it is a fairly useful tool for occasional use.]
Now please do an online scan at panda:- http://www.pandasoftware.com/products/activescan?
-select a link to the scan... free online virus scan...., enter a valid? email and follow through, choosing My Computer for a full system scan.
Post the log it produces here, plus a fresh hijack this log..