There are plenty of guides that you can use. check out this topic:
http://forums.xbox-scene.com/index.php?showtopic=215055 as for the hardware here is a list that you can use:
1. PC (obviously)
2. Xbox (Even more obvious)
3. Action replay(if you don't know what this is follow this link
http://www.walmart.com/catalog/product.gsp...A120144%3A781454.Crossover cable.
5.Ethernet port
6. Splinter Cell (Damn Obvious)
Now begins the fun crap. To go into the usual place where you get the Splinter Cell Game Exploit you probably need to follow this link
http://www.xbox-scene.com/articles/xbins.php This link here will tell you all about "The usual places" and how to access it. Once you get into "The Usual Places" you will need to go into XBOX, game exploits, splinter cell exploit and download the .RAR or .ZIP file. Next you will need to UNRAR or UNZIP the file using UltimateZip, Follow this link here
http://www.ultimatezip.com/ then download it. Once unzipping the file you will need to transfer the file over to the Action Replay Memory card. plug the Memory Unit into one of the slots on the Port 1 controller after doing this you will need to select the Splinter cell exploit and copy it to the hard drive. (Note you will need to delete all of your Splinter Cell Game Saves) then boot up your Splinter Cell Game and go and load the Linux profile by selecting start game select the linux profile and go and hit checkpoints the EvoX dash will load up. Once this is done go back to your computer and go into network connections and select your Local Area Connection and Right click it and go to properties go to TCP/IP and double click it change the IP Address to 192.168.0.3 and the Subnet Mask to 255.255.255.0 and close it all out. After this go into FlashFXP which you should have downloaded to gain access to "The Usual Places" and enter these settings "Server or URL:192.168.0.3, User Name:xbox and password:xbox hit connect and volia your in your Xboxes hard drive go into Udata which is under the C:/ drive now you need to download the Linux installer from codejunkies via this link:
http://us.codejunkies.com/saves_show_game....g=559437140&p=8 Then take the file inside of the Udata folderand replace it with the file that has the same number on the Xboxes hard drive. Then reboot the Xbox and load up Splinter Cell load the Linux Profile and that will bring you up to LTools and select install UDE this will install every thing for you and you will be done. If you screw up don't blame me but I strongly suggest backing your Xboxes C:/ and E:/ that way IF you do screw up then you can go back in replace your C:/ and still have everything working. By doing this softmod you will hold me in way possible responsible for screwing up your drive OR Xbox entirely.