hahaha once again there is no actual connection of the N64 to the pc when you use a dex-drive, so pj64er is correct in that matter, and who needs a dex-drive anyways when you have a perfectly good adaptoid with it's drivers installed? LoL not to mention I don't believe there is any support for the dex-drive as it's site has disappeared etc etc (not saying that
www.interact-acc.com isn't still there but a lot of their smaller sites are gone)...
and yeah the orginal post had nothing to do with roms it was only about using a monitor to display with their N64...
and btw the improvement you get by using a monitor instead of a tv (Unless you have a high-def tv) is a crisper image, TVs have round pixels, which end up blurring your image, and monitors have square (some have hexagons etc etc but i'm not getting into that technology right now) thus creating a sharper image, and yes monitors support higher resolutions but it only helps if the image being sent to it is sent in those resolutions otherwise it will only be displayed as the n64's native res unless someone develops a way to boost the res while the signal is being converted inside of the VGA box etc etc...
my best suggestion is to read up about this stuff, a good place to do it is
www.gamesx.com they have a lot of different tech items on consoles and comps, info on cart pinouts, controller pin outs etc etc go read some docs and then make your decisions on what kind of HW you wish to persue for your need