301 Redirects and URL Rewrites

Will this cause a loop?

[Jimville]

My site's origanal URLs looked like:
www.my-web-site.com/?city=00

After a rewrite they look like:
www.my-web-site.com/default.asp/city/00

If we put a 301 redirect on the www.my-web-site.com/?city=00 to www.my-web-site.com/default.asp/city/00, will it just create a loop? Or, does the filter on the server just interpret the rewrite, and just send it to its final destination? (We're concerned that when it goes through the filter to the "original" url, the 301 redirect will kick in again, causing a loop.) Thanks for your help.

Jim