UV-Packer does it with a single click of a button.

UV-Packer 1.11 is compatible with:

* 3ds MAX 2012 32 bit
* 3ds MAX 2012 64 bit
* 3ds MAX 2011 32 bit
* 3ds MAX 2011 64 bit
* 3ds MAX 2010 32 bit
* 3ds MAX 2010 64 bit

Requirements

* Microsoft .NET 2.0 installed
* Microsoft DirectX 9.0c

Download:

http://www.filesonic.com/file/890915174/_U…&_64Bit.rar

http://www.fileserve.com/file/QXcsfdk/_UVPacker Ver 1.11 For 3DsMax2012 32Bit & 64Bit.rar