revolution web 2010 bug help plz

Code:

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Fatal error: Call to undefined function mssql_connect() in C:\wamp\www\GunZ\secure\config.php on line 12

Warning: Unknown: open(C:/DOCUME~1/ADMINI~1/CONFIG~1/Temp\sess_1be764cce04709f38f6bcaa4f3e014*** O_RDWR) failed: No such file or directory (2) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (C:/DOCUME~1/ADMINI~1/CONFIG~1/Temp) in Unknown on line 0

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help plz

msn: Lin_Kevin_1995@hotmail.com