Download my muttrc and save as ~/.muttrc. Edit it and replace <YOUREMAIL>, <YOURNAME> and <YOURDOMAIN> with proper values.
If you want to use the quilt and vimdiff hooks, download mutt-quilt_import and mutt-vimdiff and place them on ~/bin/, giving them executable permission. Before using them, create a file called ~/.trees that will list your source trees. Example:
aris@tate:~$ cat ~/.trees
/home/aris/kernel/linus-2.6
/home/aris/kernel/2.6-mm
aris@tate:~$ 
And install quilt, vimdiff and dialog. Hitting '<esc> v' while viewing an email with patch will allow you to select the tree you want to use and then open vimdiff so you can review the patch. Hitting '<esc> q' while viewing an email with patch will add the patch to the selected tree (quilt) series. If you want to change the keys, edit muttrc.