Do I need to upgrade Microsoft Net Framework 1.1 to the version 3.0?

Win XP SP2

Do I need to upgrade Microsoft Net Framework 1.1 to the version 3.0?uninstall internet explorer

No- although it would be good too.

Do I need to upgrade Microsoft Net Framework 1.1 to the version 3.0?microsoft.com internet explorer

its no essential.

but if you upgrade it to version 2.0 would be better.

version 3.0 is not used widely yet!