Eblaster is some NASTY SPYWARE and it could be on your PC.

It can be remotely installed on your computer by your employer or partner, giving them remote access via email to your email, your instant messenger conversations and it records your keystrokes sending all the info to a desitnated email address. It’s difficult to detect and many of the spyware removers do not look for it. Supposedly EBlaster is recognizable by its main program file, which is 468KB URLMKPL.DLL, in the Windows/System folder. Also added are msskfzwin.dll, msskfzwin.ocx, and winmsskfzwin.drv. EBlaster must send e-mail outbound to report on you. Severing your network connection will only cause reporting to be delayed.

One third party solution that claims to remove it is Net Cop who offers a trial version for download.
(Thanks for the info TechnoErotica.net)