Interspire Shopping Cart Custom URL Mod

Someone has posted a similar need a while ago. I have the exact same need : I need a professional who is experienced with Interspire Shopping Cart (version 5.5.4, latest version) - ([login to view URL]) to create a custom module for me that will allow to define custom URLs just like how wordpress allows slugs. The custom URL field should be available for products, categories, and web pages. The problem is that french product titles, categories and web pages turn out to generate strange URLs. Besides, for SEO purposes, I want the URL to stay the same even though I change the product/category/page title. Here is an example of a *bad* URL I get with a french accent (e with an acute accent) in a category title : [login to view URL] The mod should be simple to implement using the Interspire API (Addon plugin feature ideally). Placement of the custom URL field will be given upon acceptance of the individual/company who fulfills our requirements. Again, you MUST be experienced with Interspire - Only experienced people will be considered - NO EXCEPTIONS !!! Upon successful completion of this project, if everything goes well, we will have further work on other Interspire projects. !! IMPORTANT !! In creating this mod you will release all rights to my company and you may be required to sign a non-disclosure agreement. You will also be required to give use EXACT documentation of what you did and how we can duplicate the mod to other Interspire websites. Thanks