Msg: "Illegal mix of collations..."

[Kostis Magh]

Hi,
My environment WinXP + Apache 1.3 + PHP 5.0.2 + MySQL 4.1.6 gamma
I can connect with no problem to a mysql db, using the mysql_connect functions.

I try to connect using the mysqli_connect functions, and I get the following message.
Error executing query: Illegal mix of collations (greek_general_ci,IMPLICIT) and (latin1_swedish_ci,COERCIBLE) for operation '='
SELECT <field> FROM <table> WHERE ....

I created a new db, but the msg persists...
What that means? MySql was installed with collation option : greek.

I upgrated to 4.1.7, but nothing...

Any sugestion?

Thanks