Erm reload the page and click yes to the security warning ?
I just downloaded Sun Java as well and it seems that it works It's just a bit slow for me
I use 56K though so thats probs why. Leave the page alone for 5 or 10 minutes see if you get anything happening.
If your desperate for help download mirc from
http://www.mirc.com
and click this link
#Msgplus Support Channel