Welcome to TSF.
Please print out or copy this page to Notepad. Make sure to work through the fixes in the exact order it is mentioned below. If there's anything that you don't understand, ask your question(s) before proceeding with the fixes. You should 'not' have any open browsers when you are following the procedures below.
Go to My Computer->Tools/View->Folder Options->View tab and make sure that 'Show hidden files and folders' (or 'Show all files') is enabled. Also make sure that 'Display the contents of system folders' is checked. If you have Windows XP, the search feature is a little different. When you click on 'All files and folders' on the left pane, click on the 'More advanced options' at the bottom. Make sure that 'Search system folders', 'Search hidden files and folders', and 'Search subfolders' are checked.
For the options that you checked/enabled earlier, you may uncheck them after your log is clean. If we ask you to fix a program that you use or want to keep, please post back saying that (we don't know every program that exists, so we may tell you to delete a program that we think is bad to keep).
Download KillBox
http://www.greyknight17.com/spy/KillBox.exe. Don't run it yet.
Reboot into Safe Mode by hitting the F8 key until menu shows up. In some systems, this may be the F5 key, so try that if F8 doesn't work. Make sure to close any open browsers. Run a scan in HijackThis. Check each of the following and hit 'Fix checked' (after checking them) if they still exist (make sure not to miss any):
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.quicknavigate.com/bar.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://www.quicknavigate.com/search.php?qq=%1
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://www.quicknavigate.com/search.php?qq=%1
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = http://www.quicknavigate.com/
F2 - REG:system.ini: Shell=explorer.exe, msmsgs.exe
O2 - BHO: VMHomepage Class - {FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF} - C:\WINDOWS\System32\hpCAD1.tmp
Run KillBox and check the box that says 'End Explorer Shell While Killing File'. Next click on 'Delete on Reboot'. For each of the following files below, check the box that says 'Unregister .dll Before Deleting' if it's not grayed out. Copy and paste each of the following into KillBox (hitting the X button for each file - choose NO when it asks if you want to reboot):
C:\WINDOWS\popuper.exe
C:\WINDOWS\System32\msole32.exe
C:\WINDOWS\System32\shnlog.exe
C:\WINDOWS\System32\intmonp.exe
C:\WINDOWS\System32\intmon.exe
c:\windows\system32\msmsgs.exe
C:\WINDOWS\System32\hpCAD1.tmp
Reboot into Normal Mode run a new HijackThis scan. Save the log file and run KRC HijackThis Analyzer
http://www.greyknight17.com/spy/KRC%...20Analyzer.zip in the same folder to get the result.txt log. Just post the contents of the result.txt file in your next reply.
For the background problem:
Right click on
http://www.greyknight17.com/spy/RepairDesktop.reg and download that file. Double click on it and click on Yes when it asks you if you want to merge it into the registry. Once that's done, restart your computer.
Login as usual and now right click on your Desktop and go to Properties. Next go to Desktop tab->Customize Desktop button->Web tab. Uncheck everything listed there. Then delete all the entries listed except for 'My Current Home Page'. Click OK and OK.