I feel pretty stupid asking this question because I'm pretty warry about my computer security and I know quite a bit about security but I'm no windows buff or windows security buff I'm a linux guy but I need windows for some things so I can't convert everything to linux *Sad Face*, I have a problem. I find my computer scanning ports 445 and 135 and sometimes proxy ports at different times of the day. I have the current service packs for Windows 2000 installed and all the Security updates installed I also have Norton updated constantly and the newest Adware by Lavasoft along with Spysweeper by Webroot. I've tried everything, I've gone though all my services that are running in Computer Management. Ive gone though my registery and even used some programs to grab my ram (Maybe there was something loaded in RAM) and I've found nothing. I've gone over my computer using forensic tools to determine types of code which will initalize port scans and looked for keywords that maybe helpfull and found nothing suspicious. I've gone though all my windows startup configs and found nothing odd that starts up. I've done numerous sniffing attempts to see if my computer was getting information from something and or was connected somewhere for just a second and then started scanning but still NOTHING (I've sniffed for a week straight). I've used a few programs which maps ports to programs running and nothing odd there. The things I did notice is that svchost.exe and services.exe seems to be processing these scans but its not odd for those services to be processing ports at all. I'm really in a stump right now and I'm sure since my computer is mass scanning that this is publicly know n already anyone have some clues where I could look or what I should do. I really do not want to reinstall this system because I do not have broadband nor a CDRW to backup things on here nor do I feel like having to reinstall a bunch of stuff just because I maybe infected with some type of trojan or something.

Regards,
Dephial