How do I back-up my site using MySQL?

[m l]

I used to be able to do it using the following command:


C:\mysql\bin\mysqldump.exe --verbose --quote-names --opt --host=(host) --port=3305 --user=(user name) --password=(password) (user name) > backup.sql


But I haven't done it in a while; and now, after starting over from scratch by switching computers and downloading the latest version of MySQL (Server 4.1), it no longer works.

I'm thinking maybe the port number has changed or maybe I have the wrong version of MySQL or something.

Anybody know what's wrong?

I'm a newbie at this stuff and, believe me, my host is no help at all.

Any help would be greatly appreciated. Thanks.