Yes you will need a MIDI interface. Something cheap like the ones built-in in cables (commonly called "MIDI-USB cables", are actually interfaces) if there are drivers provided should do the trick. You'd need also a bank manager or a sys-ex sequencer, the Virus is a popular instrument so there's probably a few free ones designed with an interface for it. If you haven't done it yet, I suggest you go to Access' site and get the
pdf manual to give it a good read, IIRC there's a good explanation about bank management and how to switch banks and backing up in order not to lose sounds.