This really isn't a a true fix as much as it is a work around, but the easiest way would probably be to download and use a home screen replacement. Set 1 up the way you want it, and use the other for your day-to-day activity.
Currently I have the stock Touch Wiz that has all the crap on it, i.e. all the standard home screen widgets and programs. My alternate is
Launcher Pro, that one I have set up the way I want it to work, very minimalist and everything clean neat and organized between 3 scrolling screens. I used to have
Open Home when I had the G1, and I still have it on the Vibrant, however I just can't get it to do what Launcher Pro can. (There are free and paid ones of each available)
Whatever one you choose, you can either set one as the default or check neither as default and it'll ask you which home you want to use each time you hit the home button, both will be set up however you want.
Another option, which is super low tech, simply add another screen to you existing home screen lineup and keep it empty. Either way you'll find something you like.
Good luck.