Bin ich zu doof für Wordpress?

[mbeezy]

Ist bei 425mb.com localhost denn richtig?

Ja.

How do I connect to a MySQL database?
To connect to MySQL you must use the following details

database name = username_dbname
database user = username_dbuser
host = localhost
port = default
database password = dbpassword

NOTE: replace the values dbname, dbuser and dbpassword with their real values, you must have created this database and assigned privileges, see the article above for more information on this.

http://www.425mb.com/faq.jsp#E_C