I have tried in the BETA and in the Full Workstation 7 to load Windows 7 x64 on VMware Workstation 7.
Every time I used the easySetup it failed and would say ERROR "There are no images available."
This is caused by what I can see as the the install is looking at the autoinst.flp for the OS image and since its not there it fails.
The quick and easy fix is to just turnoff autoinst.flp by going to edit setting and click on floppy then uncheck Connect at power on. Then restart.
It should start installing and it should recognize your virtual scsi ctrl. If it doesn't you can click Load Driver then connect the floppy with you virtual scsi drivers on it.
I hope this helps as this was very frustrating for me when I just wanted to get the Windows 7 up and running as fast possible. I even had difficulties installing on ESX 4 as well but I think it may be related to missing patches. If I figure it out I will post a seperate blog on it as well.