Lloth Silvershade

With every viewer I have tried I can't get it to go from startup to loggin... They start just fine, but after an hour or so still no loggin....There are no error messages, the hang up happens from the very begining, and I'm on a DSL.... This has been going on for over a year, I have tried everything from checking my firewall to making sure I have at least the minimum requirements to run the viewers and still get nothing but a blank box on my screen....