The biker shorts will work on the V2->P4 Vicky that came with your purchase (that is the Vicky 2 with the modified body mesh that works with P4 clothes). If you want to use the biker shorts with the Vicky2 that has all the body morphs, you will have to modify the mesh on the biker shorts so that the body parts correspond to the parts on Vicky2. Theoretically at least, this is possible using the setup room in Poser Pro Pack. Although I haven't done it myself, some very knowledgable friends tell me it can be done. If you have Pro Pack, read the PDF manual that came with it, especially the section on making a new character using the bone editor. This should give you the general idea of how to go about it.

Jim Moore