I finally do not stop trying on Vmware Workstation..
-Before firing the setup, put it in Windows XP SP2 compability mode, this avoid a blue screen during driver install.
-If you have UPS or a notebook, you can turn on disk cache performance, which isn't checked by default (even on notebook!).
Mostly, vmwks is VERY slow when you fire the FIRST VM. Then, after 5 minutes of blackout (vista host is frozen), everything goes back to life as normal. Anyway how many VM you start/shut, the cost is on the first only. Until you reboot ! Life to Hibernate mode :)
Another clue: The more the First VM you power on has, the longer will be the frozen time...
Just need to fire the first VM with the least ram possible. You can then shut it, put back the good amount and go ahead..