I can't believe no one has done an add-on for this yet, either that or I am totally blind.

I am looking for something that, when you open mail that contains attachment like auction cash, simply places the cursor over the 'take attachment' button for a simple mouse click. Another addition would then be to have the cursor go back to it's original position.

Please let me know if this has already been done. If not, anyone interested?

http://www.wowace.com/wiki/GMail mayby. Press the open all or open selected ét voilá opend !!

or http://www.wowace.com/wiki/BulkMail from http://www.wowace.com/files/BulkMail/BulkMail.zip

or http://www.wowace.com/files/Postman/Postman.zip

An addon that has the ability to move your mouse?

Can't happen.

They can move buttons to be under mouse instead. :)

However, I don't think OP actually needs that, what he needs is an addon to quickly pick things up from mailbox. Several are mentioned already in this thread and next version of Titan Panel - Itemized Deductions will have such feature too, automatically working with already existing "combine all" feature.