Hi, Darcy -
        I agree with Britt; even with two computers, I still keep time records
in my little pocket planner (Daytimer).  It has a two-page per day
format, with one page showing hours in half-hour increments.  I mark off
the time, list the job & total the time spent.  This all goes on a job
ticket later.  The nice thing about this is that it doesn't get lost in
the shuffle of papers on my desk, and I can find entries even for those
fun jobs that get strung out over several weeks/months.  You wouldn't
need a planner (although they are indispensible), any notebook would
work.
        I've never found it convenient to record things regularly on the
computer; the planner organizes my day, and I can take it with me (no
laptop!).

-Gail