Need Help With Strange Error Message Barrages

Okay first I'm going to have to give a little background on what this problem may have to do with. A couple months ago this computer I am using was was infected with a dialer that I could not get rid of for the life of me. I asked for help on this forum, and all help given, was useful but could not get rid of the dialer permenantly. Ever everytime I would wipe the dialer from my computer (and by "wipe" I mean, I would fix it in spybot, Hijackthis, then delete it fromt the windows/system32 folder, and delete it from all TEMP folder, all in safe mode.) the dialer would return 6 hours to 2 days later. $teve recommended the Idea of making a Dummy Prvdi.exe file. but this didn't work because it would just be overwritten with the real file. I then decided to just live with it, but I couldn't take it anymore. So I came up with the Idea of make the Dummy File Read-only so it cannot be overwritten, and it worked. right now I have dummy files of Prvdi.exe and Tibs3.exe in my windows/system32 folder, but ever since I created those files, this strange phenomenon would occur:

after booting up my computer, when I open up Mozilla firefox 1.0, I will get a Barrage of error messages, LITERALLY a barrage! I'm talking 2 or 3 alerts per second, and they won't stop coming. the only way I can stop the stream of alerts is to stop the explore.exe process in the windows task manager, then run explore.exe again.