dos program loaded and run on Win XP

We have legacy software developed by our client A-B and it was written for a dos environment. It was last run on a system running Win 98, (ran fine of course). We had to replace that dinosaur recently and got a computer with XP Pro. I have never loaded a dos based program on an XP machine. Does it work (should it work) are there any precautions I need to consider in loading this software? I’m an NT user and haven’t done much with XP. I could use a little advice.

Thanks in advance!!!!!
Jim