Hilmar,
Did you try Microsoft's own "Virtual Desktop Manager" PowerToy? I am using it since long ago and works great too. I did not checked yours, so I am not sure how it compares, just giving you another option.
http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges
