Win2000 like Win NT and currently XP are not DOS compatable. it is at the NT indicates
I am not sure about 200o the XP precursor but XP does offer a compatability check where older programs cam be checked out and if possible modified to run.
Not always successful.
Intiially therefor try this.
Go the My Computer, Click on Help/Index
and in the field type compatability.
If you get a response try it.
Otherwise go the the program makers web site if they still exsist and see if a NT/2000/XP version exists