Robert Petruska produced a wonderful bunch of Windows GUIs for simplifying some VMware command line tasks:

• VMware DiskMount GUI VMware DiskMount GUI is a windows GUI front-end for VMware's drive mapper
• VMware DiskManager GUI VMware DiskManager GUI is a windows GUI front-end for VMware's diskmanager
• Virtual DiskFactory Virtual DiskFactory is a windows GUI front-end for VMware's diskmanager, with many advanced functions
• VDK GUI VDK GUI is a windows GUI front-end for Ken Kato's VDK

You can download every GUI here: http://petruska.stardock.net/software/VMware Update: for Kato's VDK another GUI is available: Jacopo Lazzari's Virtual Drive Manager