XP 64, and other 64 bit OS...

here is a link for a 2 months trial of Windows XP 64. I'll take here an opportuniy to say that Microsoft made a huge mistake by releasing all versions of Vista in both 32 and 64 bit. Jesus, they should only have made a 64 bit version available this time! Thousands of software companie have not yet been able to release compatible versions of their products since the release of XP 64, a couple of years ago (and PGP corporation belong to them). What can we expect from the same lazy teams if they still have the choice? Microsoft should have definitely forced them to develop for 64 bit by releasing ONLY 64 BIT VERSIONS OF VISTA! What a loss of time...I heard Gates say that we were still in a transition phase between 32 and 64 bit OS, when will that transition end? (he actually talked "slowly slipping into the 64 bit era", lol!).