>>Hadn't come across this but it appears you can override the default validation by specifying your own class derived from RequestValidator:
>>http://msdn.microsoft.com/en-us/library/system.web.configuration.httpruntimesection.requestvalidationtype.aspx
>>Just a question of overriding IsValidRequestString (and maybe supplying validationFailureIndex).....
>
>I think you wanted to reference to this page instead:
>
>http://msdn.microsoft.com/en-us/library/system.web.configuration.httpruntimesection.requestpathinvalidcharacters.aspx
>
>Is that correct?

No