Mapping URLS

[techniz]

I have changing CMS packages from phpnuke to Mambo and wondered if it is possible to do the following:-

When person visits old url, get them redirected to new url, but I only have about 50 I want to move. I can't use mod_rewrite because it's impossible to tell old url to go to new url, because of the new layout.

Can I map old url to new url in a table and somehow get the system to read this table and map accordingly?

Anyone any suggestions