Problem

see me see trouble,trying to be nice,I helped some guy download some stuff on his nokia 6600 and since he never had the jack to connect to the computer,i had to use my phone,6630 and when i was done,i took out his memory card and since then,my phone has been going crazy,it restarts itself and then it connects to the internet and thsi is very strange and then it will restart itself again and then show that i have a message in the outbox and when i go to see this message,it's in mms format and basically i do not know if this is a virus or whatever.
please let me know.i have downloaded all sorts of anti virus for this and still yet no good result

i have been able to get it off.thanx