robind

I have a quick question about mod rewrite

I have well established php site with history and inbound deep links with low to medium complexity dynamic urls which are comprehensively and fully indexed by google.

I keep reading about the benefits of static urls. Is it worth implementing a mod rewrite rule to create static and user friendly urls if my current links are already comprehensively indexed?

Presuming I go ahead with this, I understand page rank would dissapear but not necessarily the rankings. Can anybody back this up? Is there a possibility of losing link equity on existing inbound links. I know you can redirect these, but it sounds potentially problematic to me.

thanks in advance