Backdoor/subseven trojan horse

Every few days, my Norton Internet Security program notifies me that it has blocked a computer from connecting to my computer through a "backdoor/subseven trojan horse." I'm concerned that my computer may have something on it that draws these nasty outside computers to my computer via backdoor/subseven trojan horse. I've run through the programs in How to: Spyware, Trojan And Virus Removal ( http://forums.majorgeeks.com/showthread.php?t=35407 ) and am still having this trojan horse problem. Is there more that I can do to protect my computer?

 

I purchased BOClean for the prupose of eliminating this Sub7 trojan, but BOClean hasn't worked. I followed the sub7 removal intructions at Symantec, see
http://www.symantec.com/avcenter/venc/data/backdoor.subseven.html
but did not see any of the values listed in steps 8 and 10 of the Symantec sub7 removal procedure. I didn't find any "Traylcon" either after following their procedures.

I still have that damn Sub7.

There's a Sub7 Trojan Removal Guide at:
http://www.geocities.com/Pentagon/Quarters/5077/new/sub7guide/
but it's difficult to follow.

Please help. Thanks

 

I think I figured out the problem. Somehow, my unique IP static address got on some bastard's list and every now and then trys to gain access to my computer via a backdoor. Norton blocks it every time. In addition, I may have something on my computer that is one half of a subseven trojan horse, but none of the Spyware, Trojan And Virus Removal programs I've run can find it. There probably isn't anything on my computer. Thanks for all the responses.