I think you don't understand :
how to do when you have shake3.5 and xsi 4.0 for linux,
AND,
shake must have redhat 9 or fedora(the reel last version redhat ...)
AND,
XSI 4.0 must have redhat9 and only redhat 9, it's not possible on fedora because the kernel is too recent !!!
AND,
redhat9, a one year old system with a old kernel 2.4, who don't recognize the last computer you've bought ...
Reality is Softimage arrived with a good soft but if you want to work on linux, you mut have old system and old computers ...
I think it is really a shame when you bought a this price one soft, it must be possible to work on the last system, take shake 3.5 for example, you can install it on the version you want ...
AND
i don't know if you had the news but red hat won't exist anymore, now it's fedora ... than if you are working on linux hurry up to buy redhat 9.0, if you have xsi 4.0