URL Rewriting - Reversal possible?

Alright, so the URL rewriting functionality built in with nopCommerce works for me, but I do want to know if I can have it work the other way around as well?

So if I go to:

http://localhost:61030/topic.aspx?TopicID=6&About-Us
    - it sends me to http://localhost:61030/topic/6-About-Us.aspx

Right now if a user goes to:

http://localhost:61030/topic/6-About-Us.aspx
    - it really shows them http://localhost:61030/topic.aspx?TopicID=6&About-Us

I want the clean up to work both ways. Is that possible, I just hope it doesn't get stuck in an infinite loop.

Thank you,

Laki Politis

Also is it possible to do the rewrites without having the link show the number.

For instance... http://localhost:61030/products/2990-2000-yz125-yz250-lt-bolt-edited.aspx

would just be http://localhost:61030/products/2000-yz125-yz250-lt-bolt-edited.aspx

I may get classy and remove the .aspx

Thanks,

Laki Politis.