PushVNC7
I am still using IntelliAdmin, give the trial a test. PushVNC7 works but does leave files on the pc that your connecting to (doesn't clean nicely). IntelliAdmin does however do a clean up after & any file that has hooks in it gets removed on re-boot.
There is also ChrisControl...
There are only 2x that I can think of, both are not free. Although I have had experience with both, I found IntelliAdmin the best.
IntelliAdmin Remote Control
Dameware Mini Remote Control
PS I only created this account so I could let you know, if you do have any questions please contact me...