[Hampshire] gtk update

Hello Folks.

Just tried to run the 3.0 version of firefox on etch but getting an
error informing me that GTK+ is "out of date". Its telling me I need
GTK+2.10 or later. Problem is I can't find a package that's called that
specifically and of course there are a bejillion packages with gtk in
them and to be honest, I'm not sure which ones I need.

Any guidance gratefully received.

Mike