A good program to adjust & resize your images. Frontpage ain't it...it's specifically made to work with Web pages & not images.
Irafran View seems to be very popular (& it's free). Paint Shop Pro is great & about 1/6th the price of Photoshop & Macromedia Fireworks is good. PhotoShop is pretty much the leader for image manipulation & costs aroung $600.00 US (They also have a reduced price & feature program (Image Ready...I think).
I don't use Frontpage due to it's restrictive server-side includes that you must upload to the server to make it work (plus it's just another MS attempt to control more of everything that happens on the Internet). I would recommed another program for Web design (like Homesite), but you've already invested in Frontpage.