Green Card Name Change

[ravi_nc]

My name currently on my green card is as follows

First name: AA

Last Name: CC DD

Middle Name: BB (Not on green card)

All my previous US visas also display my name as on my green card (H1b and F1). Since my passport is expiring I m applying for a renewal wherein I plan to correct my name as follows

First Name: AA

Last Name: DD

Middle Name: BB CC ( part of given name in indian passport)

What process do I need to follow to update my last name on my green card? what documents do I need to get this name change processed. Also I would like to know how to get my US spouse's last name changed from CC DD to DD.

Any help or comments will be greatly appreciated.

Thanks

[ravi_nc]

Will appreciate any thoughts on this issue.

Thanks