I need to buy a few more computers and notice that DELL is only offering VISTA operating system with its Dimension product. Do you think VISTA is inevitable like death and taxes? Also, we have choices between 32bits and 64 bits. Given I have a network with 10 terminals (I'll need to buy more CALS), should I be purchasing the 64 bits, or am I asking for trouble?

Appreciate your answer on these hard hardware issues.