Moving xbox saves to your x360
 

If you've read the front page of x-scene then you have probably read the article about this.

There is a utility that you download from http://www.360gamesaves.com/. It is called Xplorer360 and will allow you to browse, read, and write to the x360 HDD using your computer.

Since the x360 drive is serial-ata, you must either have a serial controller on your PC mobo to connect the 360's HDD to you PC, or you can probably purchase a USB HDD Bay for 2.5" serial drives.
Here is one for 30 USD:
coolgear USB SATA Enclosure

good find i was reading about myself the other day, seems like it will soon be a breakthough for complete 360 modding