I would like to put GPO, GPO Jazz & Big Band, GPO Strad and GPO Gofriller Cello (as well as Synthogy Ivory and Kontakt 2) on an external USB hard drive so I can access them when the drive is connected to my studio computer when at home (a Mac Dual 2 Ghz G5), but also access the same installation of these files when the drive is connected instead to my laptop computer (MacbookPro) when on the road. Can anyone kindly explain to me the best way to achieve this in terms of what needs to be installed on each computer, etc. so that they both can "see" the installations when plugged into the external drive?

Thanks for any help!!
- robjohn