Little help pls.

[DavidR]

Well my friend google comes up with lots of hits for 'XP firewall grayed options out' http://www.google.co.uk/search?q=XP+firewall+options+grayed+out The first hit looks promising as do some others. These however are probably dealing with the systems reasons why the options are grayed out not malicious reasons, but armed with FWFs links and the google search you should have plenty to get on with. Not to mention the other windows based forums and info on aumha.org.

[FreewheelinFrank]

lsass.exe which you had indicates a worm infection. These tools will undo registry changes made by worms which use lsass.exe, and would be worth running.

http://securityresponse.symantec.com/avcenter/venc/data/w32.mydoom@mm.removal.tool.html

http://www.sophos.com/support/cleaners/mydoogui.com