Kind of, let me give you a little more background.

We have another site that is a shopping cart. I want to be able to display products from that site in a custom module that I'll build for this DNN site. If the user clicks on a product's link in (let's say) a GridView, I want to show the product detail on a page (say productdetail.aspx) but have the URL in the browser show the URL from the cart which would be something like "p-123-generic-product.aspx".

I'm not sure if the URLMaster handles things in that way from what I've seen of it.

Mike, first of all, thanks for taking the time to help me.

I'll have a dynamically created GridView with a list of products. The product name in the GridView will be a HyperLink that will have a NavigateUrl that is built dynamically from the database so it mimicks the URL the shopping cart site uses for that product.

Product One - NavigateUrl = p-1-Product-One.aspx
Product Two - NavigateUrl = p-2-Product-Two.aspx
Product Three - NavigateUrl = p-3-Product-Three.aspx

When you click on the product in the GridView, it sees the RegEx pattern (/p-([0-9]*)-(.*)\.aspx(?:\?(.*))?) of the URLs above and redirects to "productdetail.aspx" but I want the URL to still appear as "p-1-Product-One.aspx" instead of "productdetail.aspx". 

Looking at the Web.config of the cart,  I see

and the URL in the browser always looks like "p-1-Product-One.aspx", you never see the "showproduct.aspx?ProductID..." so I need to figure out how to do something similar to that.

Thanks Jon (and Rod)...I took a quick look at that on Friday and I saw where I could redirect to a different page but it didn't hold the URL as "p-1-Product-One.aspx" it changed it to "productdetail.aspx".

I'll have to set up a test site, roll up my sleeves, and really take a look at what URL Master can do.