tool for remove virus

have this virus in my system:Win32:Istdnrdl-B-Upx (Trj) ; Win32: DyfucDldr-B (trj) ; Win32 : Trojan-gen (other)
How I can to remove This from my computer?
I have:
Win ME
version of avast Mar 2004 (4.1.357) - Xtreme toolkit 1.9.4.0 - activeskin 4.2.7.3
version of VPS 0404-5
basic hardware configuration Celeron 766 Mhz, 128 MB RAM
I connect to Internet with dial up and firewall
My e-mail client is Outlook Express
I don’t use other antivirus
Do not error messages appear

Hi,

use spybot from http://security-kolla.de
update it, and scan&fix twice with it…

also enter the EXACT virusnames into the board-search above-- lots of tips there… :wink: