it is spyware which will keep coming in through your internet explorer
If you do not have firefox get it now and use it instead of internet explorer so you dont get any more spyware http://securitynewsfromthenet.blogspot.com/
To remove the spyware/trojan/virus run steps 1-2-3
1) If you have not already scanned your comp with spybot http://securitynewsfromthenet.blogspot.com/2007/03/spybot-search-and-destroy-spyware-and.html do that now .Update it (Latest updates 04-04-2007) and then run it so it gets rid of all the spyware and trojans in safe mode
1b) Run AVG Anti-Spyware Free
http://securitynewsfromthenet.blogspot.com/2007/03/avg-anti-spyware-free.html
or
SUPERAntiSpyware Home Edition (free version)
http://securitynewsfromthenet.blogspot.com/2007/04/superantispyware-home-edition-free.html
2) Do an online virus scan to check and remove virus and spyware if you still have viruses on your computer. And let us know if the online virus scan still finds any virus or spyware .
http://securitynewsfromthenet.blogspot.com/2007/03/online-virus-scan.html
3) Get another anti virus program if your present anti virus program is not protecting you any longer
http://securitynewsfromthenet.blogspot.com/2007/03/list-of-free-anti-virus-software-free.html
Protection once your computer is spyware free
http://securitynewsfromthenet.blogspot.com/2007/04/protection-once-your-computer-is.html