Thank you Priya,
That is what I thought also, but there seems to be some problem/confusion with the x64 client on 5520. It is not really included, even though the readme and other documentation indicates that it is. I ended up opening a case with Veritas support and they could not even figure out why the client was not included, but they admitted that it wasn't. After getting the case escalated several times I talked to a Veritas tech that gave me the download information for 5520 hotfix 2 (which is not released yet). 5520 hotfix 2 is the x64 client that was not released with 5520. So hope this helps anyone else out there looking for the x64 client.
Thanks,
Todd Richards