7100 will start expiring March 2010, unuseble by June, All your personal files, pic's, music, doc's, etc. 32bit or 64bit are a matter of opinion (and everybody's got one), if your comp is 64bit ready you can use it, but there are some draw backs, drivers, prog's etc but if your computor literate you can figure it out, if not 32bit is the way to go. My 2 cents.
Smitty