Yes i bought my xbox just the other day! its a crystal 1.6 just like yours will be!
For legal reasons i dont think we are allowed to tell you where to get the files other than xbins is a good start to look. look on the home page for more info.
All you need is:
one of the following games:
Splinter Cell + ltools SC save game exploit
MechAssault + ltools MA save game exploit
007 AUF + ltools 007 save game exploit
UXE-complete package
You also need a way of getting the save game exploit onto your xbox. The way i did this was to purchase a maxdrive, you can get them from play.com for about 15quid or they are about 20quid in GAME. You put the save game exploit onto the maxdrive from your pc then you transfer the save game exploit from your maxdrive to your xbox harddrive by putting the maxdrive in a controller port and going into the ms dashboard memory utility. Once the exploit files are on the hard drive load up one of the games above and load the files as a saved game. This will cause the game to crash and it will start a ftp server on your xbox. hook your xbox up to your network. Your network must be running on the following ip range 192.168.0.XXX open internet explorer (or a ftp client) and enter
ftp://xbox:[email protected] this will show you your xbox contents. copy the C folder and keep this safe on yoru computer! you will need this if you wish to restore your xbox to play Live! or something. now delete the contents of C and drag over the contents of the UXE package, read the README in the UXE package and it will tell you exactly what to drag across. Once that is done simply reboot your computer and your laughing!...or crying
ALL files are got from the same place *cough*xbins*cough*

Hope this helps you! You really cant go wrong with the UXE-complete package!