fatal error during download

I have two problems I need help with: The first is that around the 500-700 MB mark, I receive a fatal error, which immediately stops the download and renders the partial file useless (very annoying with 768k and a 3 gig file). It doesn't really say what caused the error, or really gives any sort of message telling me what the problem is (very helpful).
The second is that my wireless connection has been dropping out constantly. It can be fixed by repairing the connection, which only gets to the step "connecting to the wireless network" before letting me on for 5-10 minutes, after which I must repeat the process. I don't think it's a range problem, I'm using 802.11g and there's less than 50 feet between the computer and the router. Also, my iBook can get a perfect signal at the same point.
If you guys could help me with either of these problems, that would be great.
Thanks, StephenK -- On my 4th attempt to download the monster that is Vista, on Verizon 768k DSL.
FiOS install can't come soon enough.

I have two problems I need help with: The first is that around the 500-700 MB mark, I receive a fatal error, which immediately stops the download and renders the partial file useless (very annoying with 768k and a 3 gig file). It doesn't really say what caused the error, or really gives any sort of message telling me what the problem is (very helpful).
The second is that my wireless connection has been dropping out constantly. It can be fixed by repairing the connection, which only gets to the step "connecting to the wireless network" before letting me on for 5-10 minutes, after which I must repeat the process. I don't think it's a range problem, I'm using 802.11g and there's less than 50 feet between the computer and the router. Also, my iBook can get a perfect signal at the same point.
If you guys could help me with either of these problems, that would be great.
Thanks, StephenK
-- On my 4th attempt to download the monster that is Vista, on Verizon 768k DSL.
FiOS install can''''t come soon enough.