Hi Sarah

Congrats on all the progress you've made!
I love having a laptop to work on - it allows so much more freedom; especially if you want to set up a wireless connection in your house, want to work at a cafe once in a while, or travel as much as we do.
As to backup - I'm not sure what you mean about 'password protection' for clients but I can tell you that we have a great external hard drive that we back up *everything* on on a regular basis. And because we build, host and manage sites for clients we also have a backup system on our server. I don't burn much to disc any longer simply because the hard drive has proven to be such a reliable option. I do also have an online document library that I store various files, etc. in but I try to encourage my clients to purchase one of their own (it's something we built ourselves, so we know it's secure

) for storage of their files, etc. If you're going to go with an online file storage system make sure you do your homework first, I've read some really terrible reports on some of those sites.
I hope that helps a bit