Help me please its driving me mad

Hi Guys & Girls

I have picked up this virus / antispyware thing called SillyDI DJM My spyware software says it can not remove it and has no information on it , I have searched the web and it seems like a lot of others have the same problem . I have downloaded just about every bit of software to get rid of it but it still keeps popping back up . it doesn't seem ( to me anyway ) that its doing anything apart from the annoying pop up from my spyware software every 3 minutes saying can not delete SillyDI DJM . when my son tries to play online games they crash every time it pops up . I think it started a couple of weeks ago when I got a virus that kept opening anothe explorer window taking me to a site that offered me help ( at a price ) for a possible security threat that my own virus protection did not find . it also messed up my internet explorer for a while until I got an update from Microsoft and that seemed to fix it . Could you kindly help as I am getting to the point were this machine is going out the nearest window along with my son ( only joking about me son ) Please please help
Regards desperate man from London

Regards