regi page help

[josh2k7]

when setting up my regi page i get this error can i get some help plz Notice: Use of undefined constant action - assumed 'action' in C:\xampp\htdocs\index.php on line 55

Notice: Use of undefined constant username - assumed 'username' in C:\xampp\htdocs\index.php on line 80

Notice: Use of undefined constant password - assumed 'password' in C:\xampp\htdocs\index.php on line 81

Warning: odbc_connect() [function.odbc-connect]: SQL error: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied., SQL state 08001 in SQLConnect in C:\xampp\htdocs\index.php on line 98

Notice: Use of undefined constant username - assumed 'username' in C:\xampp\htdocs\index.php on line 100

Notice: Use of undefined constant password - assumed 'password' in C:\xampp\htdocs\index.php on line 100

Notice: Use of undefined constant username - assumed 'username' in C:\xampp\htdocs\index.php on line 103

Warning: odbc_exec() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\index.php on line 105

Warning: odbc_do() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\index.php on line 107

Warning: odbc_fetch_row() expects parameter 1 to be resource, null given in C:\xampp\htdocs\index.php on line 109

Warning: odbc_exec() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\index.php on line 116

Notice: Use of undefined constant PHP_SELF - assumed 'PHP_SELF' in C:\xampp\htdocs\index.php on line 125

[MentaL]

[Bakey]

PHP: Hypertext Preprocessor

[josh2k7]

thx bakey got it