Not sure why anyone would want to substitite 6.20 on a VRPC install with retro ROOL 5.20/21 but there you go, a friend has asked, and I don't know the answer. 1) Could the ROOL 5.20 version ROM and Boot be installed on VRPC? 2) If it can, has anyone tried to do it? Thanks on behalf of my friend. Dave -- Dave Triffid