Special characters after conv Access to MySQ

I converted old 8.02 forum with Access to 9.65 with MySQL database. Conversion from old win-1250 to new utf8 charset was done with Mysql migration toolkit.
If I browse topics in phpMyAdmin (connection collation utf8) special characters are OK, but in forum instead of special characters there are just ????
I included "charset:utf8" in connection string but without success.
My connection string is:
"Driver={MySQL ODBC 5.1 Driver};Port=3306;Option=3;Server=localhost;User ID=myuser;Password=****;Database=mydb;charset:utf8;"

For test I created 2 scripts in PHP and ASP with "charset=utf-8" in meta-header. PHP script with additional mysql_query("SET NAMES utf8") after connecting displays correct special characters, ASP DOESN'T.

Please help me!

I stlil think my conversion was successful because PHP displays special character correcty. I think problem is in ODBC connection and some special settings.