Will Texis run on a Quad Opteron running Suse Linux???
Depends on the Suse version but it should run as long as the kernel and glibc are sufficient. You want kernel 2.4.9 or later and glibc 2.2. It's known to run on kernel 2.4.23 with glibc 2.3 (among others).
You can download the free Webinator to test out the platform.