2 P.Cs, 1 external hard drive

[zzeliminator]

This is my first thread posting and I hope it works out, so be gentle and exact in your replies.

Current set-up: desk top computer with 2 internal harddrives. Hoster program is on drive c. Song files go to drive g. I have a external USB harddrive (drive H) that I want to backup Hoster on.

Proposed set-up: Use the drive H external USB harddrive to support a portable PC. to play Hoster from.

Q. Is this allowed by MTU?
Q. If so, what must I do?

I have read here that you may used a USB to Ethernet hub that would store the hoster ID, then that hub would be carried to whatever computer you wanted on use it on.
Q. Is this allowed by MTU?
Q. If so, what must I do?
Q. What type of hubs can be used?

I just want to make the external USB harddrive usable on different computers, only one at a time.

P.S. My hoster seems to work good. I have just finished loading over 10,000 songs and will use it solely at a gig this weekend. Thanks MTU