Asp.Net Routing or Url Rewite and shopping cart

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C#

C#4.0

hi,
please help me out to solve this issue -

1. Issue about url Rewriting
a. if client goes to : "~/services.aspx?id = 1" - url should change to "~/services/abcd"
[this service name is in the database, which will be checked at the time to receiveing the request and will be changed accordingly]
b. if client goes to : "~/services.aspx" - url should change to "~/services"
[client should sees all the services]

2. Shopping cart in cookies
value will stored in cookies in the format (id,quantity|id,quantity|...)
also please help me out hot to store these items in shopping cart and also retrieve them to show in cart page.

this is an asp.net website on 4.5 framework. i am completely stuck up with these issues, but unable to solve out anything.

Thanks in advance....