Seamless RDP

Ubuntu:
https://help.ubuntu.com/community/SeamlessVirtualization
About logoff:
http://linux.com/feature/124908
another one:
http://blog.ncircle.com/blogs/vert/archives/2008/01/seamless_rdp.html
windows hacking:
http://www.codeproject.com/KB/IP/tswindowclipper.aspx
rootless:
http://www.peppertop.com/blog/?p=54