i have forgot my pass code so i was wondering how to unlock as i have forgotten the code and wont let me connect to itunes

If you lose or forget your passcode, you will need to perform a factory restore to remove it. Or read:http://support.apple.com/kb/HT1212

If you cannot remember the passcode, you will need to Restore the device...

Connect to iTunes on the computer you usually Sync with and Restore...

http://support.apple.com/kb/HT1414

If necessary Place the Device into Recovery mode...

http://support.apple.com/kb/HT1808

Note on Recovery Mode.

You may need to try this More than Once...

Be sure to Follow ALL the Steps...

You have to restore via recovery mode by following the steps in http://support.apple.com/kb/HT1212 and may need to follow that procedure more than once to succeed.