This is a little script that pops up a desktop request that allows you to type a new todo item that will be posted to Remember the Milk.
It has a really simple text based interface that pops up a single line for input and using shortcuts like t: for tags and @ for locations it creates an email in the correct format.
Zenity ( Currently this is used for the popup but I may change to pyGTK at some point)
mutt ( I use mutt for sending email but you could change this to mailx )
Download new_todo.py and edit it to set your email address and the rtm email address for your account. That is about it really.