What I did: I created one dyndns.org account, just so that I don't have to remember the IP. Then I just place the i-bay after it:
e.g. for the stats i-bay of my server: account.dyndns.org/stats
e.g. for the cs i-bay of my server: account.dyndns.org/cs
Hope this is something to help you!
Greets,
Wietse
The Netherlands