Invisible/Transparent Background in VM

Hello,

If you switch to "seamless mode" in virtualbox, you can see the taskbar of the OS on your screen , like having a transparent background on your VM.
My question: is there a possibility to do the same in VMware's Workstation (7) ? I know and use the "Unity" mode in Workstation/Player, but I like to have my xp taskbar (VM OS) on top of my windows 7 (Host OS) taskbar like it would be with virtualbox...

Thanks for tipps/links or help :b: