click here for one so-so solution.
There's a FrontPage add-in called Design Tools [DTools] which does the pop-up window scripting for you - a 7 day trial is at their site click here
Aside from that it's a case of using one of the third party scripts and embedding it in the place you want to use it.
I've not seen any function in FP 2000 that allows you to control a new browser window in the way you want to be able to.
If anyone knows otherwise, I'll be more than happy to stand corrected and learn something new along the way.