ASP.Net Specialist

Hi, For an upcoming project we require an ASP.net specialist to modify an existing CMS. The CMS is relatively complex and is written in asp.net 1.1 with a SQL server backend. The site is having timeout problems with large file uploads into the CMS. These are browser-based and we need a good specialist to come up with a way to allow for larger file uploads to be included *without* changing the [login to view URL] file or installing custom components. These restrictions are in place as the site is on a shared box, and custom [login to view URL] files can not be used. If you are up for this different challenge, please forward experience, estimate for this and approx. timeline to build it. UK-only freelancers please. No agencies.