Ha, it might be that your drivers worked actually, but maybe not..
Because here is what I did:
1) Uninstalled my drivers
2) Rebooted
3) Tried installing yours but setup.exe simply didnt run, so I went into the subdirectory it created and tried invoking setup.exe from there..
4) Seems to be I've lost the ability to control advanced options of the touchpad, but horizontal scrolling works now in VMWare, it could be VMWare incompatability with Synaptics TouchPad drivers.
5) I have Synaptics TouchPad device on the HP laptop.
Actually I've just uninstalled my drivers completely and that worked for some reason, thats weird tho.
Because in VirtualBox "it just works" with my drivers installed, but not in VMWare.
Still needs an answer from VMWare guys about this.