I too have been using PC-Cillin, in fact I have been an avid user since version 2.0 and the latest is PC-Cillin 2000 (ver 7.0). It is a very clean and intuitive interface, easy to use and quite quick. It has updates available almost weekly and they are free.
In the last 2 days PC-Cillin has intercepted 3 seperate email worms sent to me by various family members (crazy folks with no anti-virus protection) and via one of the email lists my wife belongs to. That in itself is worth the small purchase price.
Trend (the makers of PC-Cillin also offer an online scanner to check out your system you can find it at
http://www.antivirus.com/free_tools/
Don't be an ostrich an think it can't happen to you cos clean up is a real pain in the a**. The worm that is circulating now is called TROJ_MTX.A it works just like the others including the infamous "I LOVE YOU" virus in that it corrupts your winsock.dll file and intercepts any outgoing email and sends a copy of itself along with an attachment under various labels such as the following:
When an infected user sends an email to an address, the Trojan sends another email to the same address with itself as an attachment. The attachment is also a Trojan copy infected with the virus PE_MTX.A and its filename is randomly selected from the following:
I_wanna_see_YOU.TXT.pif
MATRiX_Screen_Saver.SCR
LOVE_LETTER_FOR_YOU.TXT.pif
NEW_playboy_Screen_saver.SCR
BILL_GATES_PIECE.JPG.pif
TIAZINHA.JPG.pif
FEITICEIRA_NUA.JPG.pif
Geocities_Free_sites.TXT.pif
NEW_NAPSTER_site.TXT.pif
METALLICA_SONG.MP3.pif
ANTI_CIH.EXE
INTERNET_SECURITY_FORUM.DOC.pif
ALANIS_Screen_Saver.SCR
READER_DIGEST_LETTER.TXT.pif
WIN_$100_NOW.DOC.pif
IS_LINUX_GOOD_ENOUGH!.TXT.pif
QI_TEST.EXE
AVP_Updates.EXE
SEICHO-NO-IE.EXE
YOU_are_FAT!.TXT.pif
FREE_xxx_sites.TXT.pif
I_am_sorry.DOC.pif
Me_nude.AVI.pif
Sorry_about_yesterday.DOC.pif
Protect_your_credit.HTML.pif
JIMI_HMNDRIX.MP3.pif HANSON.SCR
HANSON.SCR
****ING_WITH_DOGS.SCR
MATRiX_2_is_OUT.SCR
zipped_files.EXE BLINK_182.MP3.pif
BLINK_182.MP3.PIF
The censor software on the board may change some of the file names as some are quite indecent to say the least.
Good luck
Canuck