If, FP2003 supports the MM extensions...open FP...click on Insert and see if you see Xara Menu Maker. If it does then the best thing to do is read the help file on inserting a menu in Fontpage. Actually a piece of cake.
If it doesn't show Xara Menu Maker then I would suggest you go to the Xara Web Site and see if you can download a Frontpage Extension for it. If you can't find it then I would send their support a help ticket.
Maybe a FP2003 user will see your post and can help you more than I can. I went from FP2002 to Expression Web and never purchased FP2003 but I did use the MM in FP2000 & 2002 without any problems. I don't use it in Expression Web nor Dreamweaver but it's really a nice program especially for beginners.
Good Luck and let me know if I can be of anymore help.
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