PHP script help

[Ramster]

A friend of mine needs help with a PHP script. Maybe someone could help me fix this for him.

Here's the problem:
Trying to have some control over who signs on

Typical Signon MEMBER (form), then list members name/address etc.
The second PHP does not work...
<?include("DB_Connect.php");
$result = mysql_query("Select * FROM members where Lastname = 'HLName' and Firstname = 'HFName' ");
print ('Personal Information'); ... blah blah

He then says:
Seems no matter what I put in HLNAME line it ends up with a not found condition or PHP syntax error.
So looking for a way to pass the variable LastName to the next PHP document or SQL
I've turned on register_global but it only seems to be for the one screen and does not get set on the next screen.

Anyone?

Thanks