Mouse Drivers

I have a user that is currently using Windows 2000 as his OS. He still uses alot of DOS programs in Windows 2000. He wishes to be able to use his mouse when he is in DOS because he edits a lot of programs to specificly do what he wants the programsto do(ie just like in windows 98). Better yet he wants to use mouse so he can point and click and highlight any where in his programs so he can cut, copy, or paste so his programs work the way he wants them to. If there is such a driver where does it need to reside in Windows 2000 and how is it installed to work properly? Thank you for the help.

Markus R Bertel