Client Capabilities

[daveys110]

Is there any way to get information on the client / end-user machine specifications / capabilities?

I know about the flash.system.Capabilities class:
http://livedocs.adobe.com/flex/3/langref/flash/system/Capabilities.html

but i'm specifically interested in client memory. A total memory/RAM would be good but a free/used/total would be great.

I basically want to be able to figure out how much memory is available to the client so that I can make an intelligent decision on caching strategy.

Thanks!
D