The version numbers are confusing. It's Xcode 3.2.3, which includes SDK 4.0, which you can't use because it's still in beta.
Xcode 3.2.2, which includes SDK 3.2, is fine for releases.
ok thanks!
one more question, im getting problems when i try to test an app i built with xcode 3.2.3 (4.0 beta) on my device, what do you think the problem is?
My only guess is maybe you have the "iPhone OS Deployment Target" set too high for your device. (In other words you are building the app for OS 4.0. If your device is not running the 4.0 beta, it will fail.)
If that's not it, post the error messages you are getting, and maybe someone using 4.0 will recognize the problem.