Help Calls/SMS kicking me off uploads, apps, Intenet, tether :(

[danerin]

(I had this posted earlier, but with a title that didn't get any attention).

Does anyone know how to make ALL calls go direct to voicemail? When I am trying to upload a large file to YouTube, FB, etc - an incoming call/SMS kicks me off; and, I have to start all over.

Argh!

I have found how to do this on the HTC, through Settings:Wireless:Mobile Networks.... but similarities stop there.

Thanks