Search to find, Only the best, about:blank. Help!

Hi,
Yesterday my computer got infected by some spyware virus or whatever. The symtoms are:
-'Only the Best' advertising windows pop up randomly (although not in the past hour, since I did the stuff listed below, but I wouldn't bet that it's gone)
-My home page is constantly changed to about:blank
-When I search google or yahoo (and I'm guessing any other search engine) a new window appears at search-to-find.com with another engine searching for what I typed in google (or yahoo etc). It has a help page which says it can be removed from add/remove programs but this doesn't work (gives a error message).

Initially I tried deleting various files which were modified at the time when I got the virus, but this did nothing, indeed some files came back. I downloaded and ran Ad-Aware, Spybot- Search & Destroy and CW Shredder. They found and fixed a lot files but the problem remains. I have looked at threads on removing viuses and followed the 'READ ME FIRST: Basic Spyware, Trojan And Virus Removal' thread to no avail. I have printed the 'When all else fails - try Generic Solution to HSA (Only the Best) hijack' thread and think maybe I should follow it. However the site advises to ask before using HijackThis. I did do a scan with it but for some reason it wouldn't let me save a log file, giving the error message 'Runtime error 6 overflow'. When I load HiajackThis it gives a message saying I am running it from a read-only device even thogh it's on my hard drive (it was in My Documents, then I gave it it's own directory in Program Files, but it seems to make no difference).

Her is my system info:
Make: Gateway
Processor: Pentium 3 500MHz
RAM: 256 Mb
Hard Disk: Approx.40Gb , most of which is free
Operating System: Windows 98

Please could someone help me in removing this.

 

I downloaded HijackThis fromt the MajorGeeks website on Monday night, but just to make sure I downloaded again from your link (and put it in it's own directory in the Programs folder). But it still has the same error message, even in safe mode. When I run the program it says:
"It looks like you're running HijackThis from a read-only device like a CD or a locked floppy disk. If you want to make backups of items you fix, you must copy HijackThis.exe to your Hard Drive first, and run it from there.
If you continue, you might get 'Path/File Access errors' - Do NOT e-mail me those please."
Then it goes into to the program and everything works fine, including the scan. But when I try to 'save log' it says "Run-time error '6' Overflow".
There is then a file created called "hijackthis.log" but it is 0kb in size, so is obviously empty.

I think I should use the 'When all else fails - try Generic Solution to HSA (Only the Best) hijack' thread but if I can't post the log file I will have to work out which lines are bad by myself (I'm not really familiar with the technical stuff in it). What do you think?

 

Ok I'll try that, but I'm going away for few days so I probably won't be able to do it till at least monday. I'll post back here around then, and thanks a lot for the help.