**Virus Help**

Well playing on an Online multiplayer game i recieved a Virus, yes 100& free!
The virus is called backdoor.graybird.
Norton AV 2005 said it dicovered it and automatically deleted it.
Does this mean my system is now 100% safe from this.
Can i take any more steps?
I Turned the Anti-virus off whilst playing
, i know i did stupid and dont menion it again, My own stupid fault

Anyway as much info as possible would be very helpful and thanks for yout advice!
Many thanks
James
The virus is called backdoor.graybird.
Norton AV 2005 said it dicovered it and automatically deleted it.
Does this mean my system is now 100% safe from this.
Can i take any more steps?
I Turned the Anti-virus off whilst playing




Anyway as much info as possible would be very helpful and thanks for yout advice!
Many thanks
James