I would like to get a list of 64 bit software going. I have Windows XP x64 running and I am not finding a whole lot of 64 bit software. So far I have found the following:
avast! Antivirus 4.6 - free for home use
Tiny Personal Firewall 6.5.92 - 90 day trial $99 buy
FireFox (Deer Park Alpha 1) - free
FileDisk Mounter - free iso image file mounter - http://www.winimage.com/misc/filedisc64.htm
Winimage 7.00 64 bit - 30 day trial $30 buy
Alcohol 120% and DaemonTools are currently working on 64 bit versions.
AVG Antivirus is also working on a 64 bit version but they might NOT make a free version because they feel mostly businesses will use 64 bit Windows XP. Maybe if enough people email them asking for a free 64 bit version they will consider it.