I want to set up software development environment for both Fedora core 3 & Redhat 7.2 application development. However, I cannot install Fedora core 3 and Redhat 7.2 because their CD boot disks cannot find the disk drive but I can install Fedora core 5 on my new computer. I will compile my application source code on this new computer but download and test them on separate FC 3 and RH 7.2 computers which has our own proprietary hardware.

What is the best way to set this up?
Is it still possible to install FC 3 and RH 7.2 on my new computer?
Or do I install the gcc binary or linux libraries which Fedora core 3 and Redhat 7.2 used, then compile with the compile commands such as gcc_fc3 and gcc_rh7.2?
If yes, then how?
Please tell me any relevant website I should look at.
Thanks.

What is the best way to set this up?
I'd say it depends on what the dependencies of the application are, how much effort can be justified and what the allowed margin of error is. If you can't risk anything and you need it to say access certain HW under that release, then I would suggest looking into a way to install RHL and FC. If "CD boot disks cannot find the disk drive" has something to do with needing driver disks, check your vendors site. If you don't have any special req's but can't risk contamination you could also go for virtualisation (say Qemu). Installing separate toolchains isn't that hard I would think. You'll just have to make sure the dir tree's are separated and watch for fsck ups like RHL suddenly using NPTL-enabled libs ;-p Maybe Building and Testing gcc/glibc cross toolchains can provide a start.