How can I tell how fast my wireless link is working? It's the first time I've used one and I have no idea if files are copying from my MacBook to/from my USB HD at 5% or 50% or 99% of what they should be. Things are taking longer than I expected but that could easily be the result of inflated expectations. I have a new (N) basestation and a C2D MacBook w/the N updater. Thanks.