Hi all
"Officially" Windows 7 is only supported as a Guest OS in vmware by these products
VMware KB: Support for Windows 7 and the Aero theme
That said I've had no trouble running Windows 7 Guest machines on previous versions of vmware worstation (6.x) and have also run Windows 7 Guests under vmware workstation V2.
Note that AERO / 3D is ONLY supported (will only work) with the latest versions of Workstation (7.X), Fusion and vmware player.
There seems to be some confusion over this.
BTW the post only applies to GUEST OS'es.
You can even run Windows 7 as a GUEST OS (even the 64 bit version if the Virtualisation feature is enabled in your machine's REAL BIOS) and have AERO enabled using XP as a Host machine - although of course your max REAL RAM will be less than 4GB - so the amountr of RAM you can give your VM will be less as well.
(Actually for those still on XP and who want to try a 64 bit OS this is a good option to try --vmware player 3 is FREE to download).
Cheers
jimbo