Loads of people rave about David Hays spreadsheet for Excel 97, which you can download for free at - http://www.davidhays.net/running/runlog/runlog.html (don't know how to do proper links yet).
I've had a bit of a play with it and it seems pretty good - far better than the free Pumalog (which I thought was rubbish).
Alternatively just design your own spreadsheet, which can include exactly the information you want. Mine is much simpler than this one, and started very simply - date, course, time, pace & comment, but I have added to it over time.
This year I'm going to spend a few months keeping both my own and David hays, and see which one I find most useful.