Resolved can't logon

I have windows XP Professional SP3. I have a generic15.cklu trojan horse.
I can't log on. I tried safe mode,safe mode w/networking,safe mode w/command prompt to no avail. I removed the harddrive and installed it in another computer and ran a spyware 7 full scan. I don't know if it got rid of the trojan horse,but I still can't log on. When the log on screen comes up I click on the icon and before I have time to type in my password (it reads in little blue letters:loading personal info and then a half second later it reads logging off and then it stays on the log on screen). This happens everytime I try to log on,even in safe mode.
Can anyone help?

 

That seemed to do the trick. I ran several different malware/virus scans and find no infections. But, after logging on,on the desktop There's a black box that reads "Your System is infected" How do I get rid of that black box?
There are no more infections. Thanks

Dave