Many Compaq machines have operated on the network over the last few years - most have been retired now. Two Deskpro machines remain in use doing various jobs. HP-Compaq machines live in the HP Systems category. Like HP, Compaq did for a while build Alpha systems - should any ever arrive on the network they will live in the DEC Alpha category.
No Compaq systems currently have a page in the computers section mainly because they are PCs. Due to their strange firmware and the presence of EISA in some models they will probably get a section one day.