Web application support to all Browsers

Hi,

My outsource technology Provider has mentioned in their documentations that their Web application developed on .net framework 1.1, back in 2005, would only support working with IE6.

Is there a way where this could be upgraded to support multiple different Browsers available in the Market.

If not all the browsers could it be upgraded to work with IE7 and IE8 atleast.

I would even like to make it compatible with other OS, but i'm not sure about the cost of these changes.

Could anyone please suggest solutions for this.

Regards,
Anubhuti

If you are always working with our outsource technology provider, ask him what it is possible to do.
The cost could be very important according to the complexity of webapplication.

It's possible than your application is already compatible with IE 7 & IE 8. Perhaps the documentation has been written before the release of these application.