Url Length Prob

I have a webpage with a form and i am saving the webpage using name value pairs. So i can give the users a link which they can click on and the form will open up prepopulated.

The problem i am having is that these forms can get exteremely long (hence the prepopulation facility) e.g test.asp?name=value?name1=value1?name2=value2

is there any way to increase the url in a browser or if you know of any other way i can accomplish this id appreciate ure feedback more detail regarding the above: I am allowing useers to save their forms with the data, also save multiple versions of the form (same form with diff data).