I have a feeling the issue is NETBOOKS. However, I did find the best way to make it work.
First, uninstall ALL of AChat (For Windows 7, AFTER the uninstall finishes, go to C:UsersOwnerAppDataLocal and delete the AChat folder where Owner is your log in for Windows 7)
Download the FULL installer (or if you still have it run it!) DO NOT INSTALL THE HIGH DETAIL VERSION (at least on a netbook).
After the install completes, UNCHECK the “Launch AChat” box.
Go to C:UsersOwnerAppDataLocalAChat and right click on the achat.exe file and click properties.
On the COMPATABILITY TAB, set it for XP SP3 and RUN AS ADMIN settings
Since doing this, the new room has worked fine for me