linux flash plugin

[FBSD1]

Running FreeBSD 7.0 Xorg/KDE/ Firefox browser. 
Trying to use yahoo web messenger on Firefox.
The yahoo web messenger website says I need adobe flash player. 
So I installed the linux-flashplugin7 from the package system.

Still can not get yahoo web messenger to run on Firefox.

Does any one have this working? Am I beating a dead horse?

Any pointers would be helpful.

Thanks in advance.