PLS Help 3 Blue Screen of death Errors!

[wannabgeek]

For the last week i have been having a lot of trouble with 3 seperate BSOD errors.Plus i am also getting Ati's Cd & tv player starting up on its on accord! I do have all spy/adaware/AV's installed and up to date and have run Malaware progs regulary!So no virus! But what i did do was change ZA Firewall to Outpost's free Version, and am in the process of learning it! The BSOD's mostly happen when i am online. The first one i got was : IRQL NOT LESS OR EQUAL ; 0xA,(0x0,0x702,0x80,0x805040c4)! The 2nd one was : BAD POOL CALLER ; 0x02,(0x7,0xcd4,0x4b60,0x819a0698) !
And the last one i got yesterday... Tech info:STOP 0xc5(fe6e6470,0x02,0x0,0x8054b570)!
Now i have tried googling but with no success, as there seems to be a number of things related to them. I have tried all the obvious things like removing recent drivers,software but with no joy! The only Hardware i have changed was;Graphics card (2 mths ago) and a DVD Burner 3 weeks ago just after i did a clean instal of XP But i partitioned my HD and it was my first attempt at partitioning! So could that of caused the problems?
PS Sorry for the long post as i have tried to include everything!
Thanks'N'Advance!

[wannabgeek]

Thanks for all your help guys ,but i managed to fix it on my own. It happened to be the Outpost Firewall ! Apparently it does not seem to like XP! Who would of thought a FW could cause so much trouble!