To run the software that won't run on 64-bit I recommend doing as Mike and many other have said:
"Download virtualbox from Sun for free and run a virtual instance of win xp 32bit, win vista 32bit or even just a freeDos system to run your dos programs.
alternatively you can try dosbox, and open source project that run dos programs on other platforms. i know it works on 32bit but i have not tried it on a 64bit system."
Please do not ask the question again, the answer is already written out for you.