blank page + access denied

hi! i am having some troubles :) first i am on linux, and i am behind a router though i have ports forarded. i used port 8081 for helma as i have apache on 8080 and for the life of me can not configure apache with helma/antville which i do not mind at the moment though it would be nice...my main problem right now is:

i can access the helma page both on my external and internal ip's

when i access antville on the internal ip (localhost:8081 or ...**:8081)i get a blank page

when i access antville on the external ip i get: "java.lang.RuntimeException: Error retrieving Node: java.sql.SQLException: Access denied for user 'antville'@'localhost' (using password: YES)"

i tried searching in here but perhaps i am using the wrong keywords :/

any help would be greatly appreciated!