Can anybody help me to solve this problem?

I am using client and server, 2 pc, ok named as A and B. Now I have
created asp pages for login, update particular, do questionnaires
etc.....and also an applet for selecting data from database and then
display it. I am using mysql database server. The asp pages and
applet is stored in A and the webserver which is the IIS and the
mysql database is also in A.

When I try using local host, it work fine for everything. But when I
use IP to access, it work fine for asp pages but for the applet, it
give me an error.... ERROR: "I'm trying to use MySQL Connector/J in
an applet and I get an exception similar to:
SQLException: Cannot connect to MySQL server on host:3306. Is there a
MySQL server running on the machine/port you are trying to connect
to? (java.security.AccessControlException)

Well for B of course cannot, same error for applet whereas asp pages
no problem. Can anybody help me....I am really lost. All help is
appreciated.