right click contextual menu

I have the option email sending the file selected, but when I try open a new thunderbird asking me for an account.

I have two accounts created.

What can i do ?

[URL=http://imageshack.us][IMG]http://img340.imageshack.us/img340/16/greenshot20081227143909xa4.jpg[/IMG][/URL]
By [URL=http://profile.imageshack.us/user/Esgrimidor]Esgrimidor[/URL]
[URL=http://img262.imageshack.us/my.php?image=tmp7603kt5.jpg][IMG]http://img262.imageshack.us/img262/3922/tmp7603kt5.jpg[/IMG][/URL]

Thanks
Excuse my language. I'm from Canary Islands