Hi,
my friend tried latest winhttrack on win xp
professional on PII@400MHz/128MB RAM and
it seemed to work fine (winhttrack).
He tried to run httrack from command line, but there was 
problem with memory - program too large to  load (or 
something like this) - but it isn't problem of httrack - it is 
necessary to change it somewhere in windows.

Regards
BzF