well, icq probably isn't specified as a sticky window. you can do it in the step, and I believe it's a vwm function. I can't remember the code itself, but it should be in the module readme. and for the vwm, it all depends on how your vwm is configured. I don't believe ALL vwm's will let you move windows desktop positions through the vwm, but at least most of them do. and again, check the modules docs. you should be able to find everything pretty easy.