2 sets of modems and 1 dish

I need help i have a 2-way direcway DW4000 dish with professional edition service with direcway,i download a lot and keep getting put on the F.A.P.. So i got another set of DW4000 modems to get another account with direcway to switch modems when i need to. Direcway said i had to buy another dish which dont make sense.then i talked to tech support and was told i could just buy another set of modems to mahe it work. Now i call direcway to activate the 2nd modems and was told again i needed another dish,called tech support now they are saying that the 2 sets of modems with diffrent acounts would work off 1 dish but that the 2nd modems and direcways application software would have to be on a 2nd computer. So what i want to know is if i just switch the modems on the same computer and remove and reinstall the software and run web setup will it work with out conflict.