Please help rewriting URL -Thanks

[alfabravo Profile]

I will very much appreciate if any one can help solve this for me:
I have a site that presents the URL product page like below:

http://www.domain.com/deals.php?id=1 (id number changes depending the product)


and I would like it to show something like this instead:

http://www.domain.com/deals-id-1.html
or
http://www.domain.com/product-id-1.html
or similar

Again thank you