Hello klsdream, and welcome to Android Forums.
If by "..need one with Arabic letter support.." you mean a Root Guide translated for you, I'm thinking that the only option you'd have here is to copy and paste phrases from our Root Guide into Google Translate
text field, after first selecting "English to Arabic."
If you mean you want the language and fonts (menus, etc) in Arabic on your device, then a "language pack" from Android Market may solve that for you. Just do a search on "arabic language pack" in the Market search text field.