If you give the the web address of a test, I will post up my result. We watch occasional catch up TV with no buffering. No idea what a remote desktop is(unless it is what I am typing from....)
Varche - fire up
www.speedtest.net and then let me know what the "Ping" result is (22ms for me right now) ..
Streaming services will work fine regardless of round trip time as long as there isn't too much "jitter" (that is, packets being reordered and arriving out of sequence). Jitter really kills things like Skype though as (if I recall) Skype is UDP and doesn't do packet reordering but rather drops out of order sequences instead.
Chris - VPN is just "Virtual Private Network", really a marketing name for an underlying technology. It's just a transport mechanism, though, it's what you do over the VPN that matters.. if it's highly interactive (SSH, telnet, remote desktop etc) then it's painful with high jitter and high RTT, but if it's Email/file sharing/etc the RTT is much less of an issue.. If H connects, remotely, to another machine at head office and uses that as if she was sat at the head office computer's keyboard & screen it might be bad, but she probably just uses email/word/etc, right?