Don't know which computer metronome you use --
I have this free one on mine: http://www.nch.com.au/metronome/index.html
I also have a nice portable Yamaha I picked up from Amazon.
Nevertheless...As Oz says: "Keep it as simple as possible!"
Myself, when I first got into JP Allen and Jon Gindick lessons, they each use rather slow counts to get you accustomed to the 'beats.' At first I thought 60 bpm was way too slow, so I just went a little faster.
Yet 60 bpm is about the rate of a resting heartbeat. And since I have a grandfather style clock complete with swinging pendulum in my living room -- Well, I actually sat and watched it go to and fro to 'internalize' the rhythm. It works!
Another trick, as Oz suggests, is to set the metronome around 100 bpm (or something you feel comfortable with) but then just let it play in the background. I've done this using both the computer and Yamaha counters. Let the beat develop into your internal rhythm cycle, and you'll find you can keep time soon enough easily enough.
One other trick is to find some backing tracks with strong bass and/or drumlines -- Then adjust your metronome to those beats. Of course, you'll want slow and steady lines to start with. And then doing all the above learn and take it from there!
Also, if you happen to mess up or get lost every so often -- No biggie, don't sweat it. Just act as though you meant to do that all along, and then pick it right up again and keep going!
Hope all this helps!
"Have Harp, Will Travel!"