MS SQL 2000 ODBC Connectivity

[wxdqz]

hi,

i'm trying to access a MS SQl 2000 db via ODBC. a simple task you might say, however i'm receiving the following error message:

SQL error: [Microsoft][ODBC SQL Server Driver]Cannot generate SSPI context, SQL state S1000

this error occurs whilst attempting basic connection:

$connect = odbc_connect("intranetdb", "xxx", "xxx");

?? i'm puzzled ??

NOTE: the ODBC link is correctly installed.

any help would be great
thanks
Craig