Ubuntu on VMWare with SCSI option,a Mess!
If you are planning to install UBuntu 7.04 on VMware 5.5 with SCSI hard disk option, I would just say you, Halt! otherwise it would make your life mess. Ubuntu 7/04 or previous flavors has issue with ScSI controller on VMWare. Details later. All I tell you that after up gradation of your system, it just corrupt your Grub and even after spending 2 hours online with a German who was connected remotely on SSH, we couldn't solve it at all.
I will try IDE in near future.