We'll need to setup a firewall rule to allow you to connect to external MySQL servers. Please open a ticket and we'll take care of that for you.
Just out of curiosity, why are you running your DB on your home PC? When we offer MySQL on all of our hosted servers, and unless you're on an ISP that offers a SLA or uptime guarantee, you may run into unfavorable network conditions between us and your ISP that could cause problems for you later on.
Jef S.
WHB Support
1.800.252.1887 x 501
AIM and MSN in profile