AutoCAD VBA running scripts"

I am not sure if this question belongs in a more specific forums. If so, please advise me. Thanks.

I am upgrading an already existing system for my company. The previous system runs AutoCAD Release 13 and is customized with LISP (an AutoDesk development language). I was hired to build a new system in AutoCAD 2002, with the same functionality but using VBA instead of LISP. This requirement is due to some things that we will need to do in the future. That is why we are not just using LISP again.

However, I can integrate some of the existing LISP scripts as necessary. I don't want to translate and rewrite anything that already works fine. So, my question is this...is there someway in my VBA code, that I can tell AutoCAD to go find and run a script file? The scripts are written in LISP and if I run them manually, they work fine. But I need to automate them and integrate them with the functionality that I am building in VBA.

Any help would be greatly greatly appreciated. Thanks in advance.