[Evolution] Resetting mailto: to Evo

[Dianne Reuby <pramclub yahoo co uk>]

I use Gmail online purely for my genealogy, everything else I use Evo. I
recently misunderstood the instructions for Gmail settings, and told it
to use Gmail for mailto: (I thought this was for Gmail only, as that was
the settings I was altering). 

I've reset the prefs in Chrome to mailto: = none, removed the handler
completely, but nothing seems to to reset it to use Evo - when I click a
mail address, it loads Chrome.

I'm using Evo 2.30.3 on Ubuntu 10.10.

TIA for any advice.
Dianne