Bulk Re-Directs

I have a current shopping cart that I want to switch to another domain but I have some good results for certain pages in google so wat I want to do is setup up multiple 303 re-directs from a category and all the product pages but therre are so many that it will take forever doing it individually, does any one have a solution so that I can set up a re-direct in a category that will automatically forward all the subpages in that category. Hope this makes sense thanks in advance.

Are you redirecting a set number of pages to one other within the same domain? If so, I think you may have to do this the long way one by one. Not the same as redirecting all pages on one domain to another...

Can you not just do a domain alias? Or ht.access?