Video Plugins Not Working: Ubuntu 5.10

[Gregg]

When running Windows Opera was my favorite browser hands down. Since
migrating to Linux a bit over a month ago I have been unable to view video
with Opera 8.5. The plug-ins are set up to use Mozilla plug-ins and I have
Mozplugger installed. I have no problems in Firefox. While not a total
noob now with Linux I am still not technically proficient. Any one have
any experience with this issue?. 

Thanks,'
Gregg