Hi Jovial,
Guess you can Portuguese or Spanish..just guessing..
Well I'm in a kind of painfull stage concerning my 64 bits WinXPPro. First I can't configurated the VGA to it's best and same time Poser 7 Sr2.  Below a better /details:http://renderosity.com/mod/forumpro/showthread.php?thread_id=2725066

But one thing I know. Avast has a antivirus for 64 bits WinXPPro. as well Avir.
First one I'm using about 3 years since I got the WinXPPro. Latelly I think is not so good anymore..I got some problems for it to scan and when scan is done it can't exexcute the order...

Now I'm going to try the Avir, but I haver not installed yet. Both are FREEWARE.
Avast: http://www.avast.com/
Avir: http://www.free-av.com/

"'you shut up!  or I'll bring democracy to your country! "
Cris Galvão aka Softcris  - www.crisgalvao.com
(or softcris, SoftCris)
Rendering since 1997 and
at Renderosity since 1999.
OS Win 8.1     64 bit