You can easily get 7GB online storage space. If you have .Mac, you're set. You may have that from your ISP. For $5/mo, a place like Mozy provides the space. Or you can have 2GB for free.
If your pal with the 7GB of data has a normal broadband connection, it will take at least 2 days to upload the data and likely even longer depending on their computer use.
So it will take 2 days to upload and then 4 hours to download. It could be faster to burn to a DVD, as suggested, and mail it.
Or you can go to the store and buy the software and be done with it in about an hour
[
7 GB = 7*1024*1024*8 kb = 58,720,256 kb.
Assume 350 kbps upload speed, typical for US residential broadband
58,720,256 kb / 350 kbps = 167772.16 s = 46 hrs to upload
]