my xp 64bit doesn't let any program use internet but of Ie 64bit

[Sarah07]

I have a windows Xp 64bit on my computer with dial up connection, and it works so good until oneday i saw that no application could connect internet but of ie 64. one time i tried new version of opera and that worked for some time but after a period that stopped workng again i tried netscape and other browsers but no One worked, Even my antivirus couldn't update.

 

[i_am_a_newbie]

Did you disable windows firewall?

 

[Sarah07]

Yes I disabled that but nothing changed.