"I was going to get a database, but I'm not good with computers."

So you think that you can't use a computer well enough to use a database.  I have two questions for you:

1)  Do you search the MLS using the computer?

2.  Do you communicate with clients and co-workers via email?

Yes and yes?  Then you at least know the basics of using a computer.  Using a database is no more difficult than accessing properties on the MLS and emailing them to your clients.  Different maybe, but not harder. 

What I think a lot of people mean when they say "it's too hard", is usually that they could probably figure it out themselves through trial-and-error, but it would be a lot easier and much less time-consuming if someone either did it for them, or sat down with them and showed them step-by-step what they needed to do.  If that's the case, then get someone to teach you how to use a database!  I promise you, it will quickly become an invaluable part of your business!