This is what I've done so far: I started my computer in safe mode and did a repair install of Windows XP, SP2. I've made most of the updates but not all because Windows update online won't work properly. I also completed all the steps in the malware forum and posted my hijackthis log. This came back clean and I was referred here.
At this point I am very frustrated and at a loss as to what might be going on.
Thank you in advance for your help, it is greatly appreciated.