Anyway to do a compile c++ on 8.04 to run on 6.04

[Linda Hanigan]

Is there anyway to compile c++ programs on 8.04 LTS to run on 6.04 LTS.
I won't be ready to upgrade our business computers for another month,
but I would like to try some new stuff I am compiling so I can get some
feedback. Can you compile to run with the older libraries? 
                    Thanks
                    Linda