It's a 15 pin VGA cable (very common in old and new machines) and USB 2.0 support is spotty in Windows 98 but you can review http://www.usbman.com
But you write... "I want the VGA and DVI inputs for the 2 computer setup "
If you were hoping to hook 2 computers at once to said display, I'll write "it'll never work like this."
I am thinking of getting a Macmini to go with my old Win98 Dell and was wondering if anyone knew for sure if the Dell 1905FP would work with my old PC. I want the VGA and DVI inputs for the 2 computer setup and like the idea of the 4 USB ports on the monitor.