confusion: 32-64bit processor
 

hi, I want to test a new machine (HP dc5100M with processor Intel p4-630 3.0GHz) when install the OS (Linux), it returns me that I will install a 32 bit software on a 64bit machine. sounds confusing, because for this machine I had a cd with windows XP and not Xp-64. So do I have to enforce the 32bit installation and after Fluent-lnx86? Or should I switch on Linux 64bit (and also Fluent)? The problem is, I didn't see Intel Pentium Linux 64 for the supported platforms in Fluent list. any advices? Thanks mAx