I agree with Darren. BW Baan 4 was not desiged to run on from a home office. Especially the amount of transfers can kill you. Don't mixup an web application with an office application. I bet that if you use the ASCII interface, users will not see many issues. For BW Citrix can help you a lot.
Hope this helps,
BTW: this post has been made on my personal view. My employer might not share my point of view.