Short answer - nope, don't use Time/Design. Haven't since I began using my own printouts from early PC PIMs, then Palm after it was debugged somewhat, now the Treo, synching to Lotus Notes (in terms of action lists).
Some of you probably remember from a public post many moons ago, as I gave my history with Time/Design. When I worked for Insight Seminars, developing its division focused on business versions (1983-ish), we discovered TimeSystem in Europe, got it translated into English (it was only in Danish and German at the time), and acquired the rights to distribute it in the U.S. The name had to be changed to Time/Design for the U.S. market, because there already was a Time System company in the U.S. For many years I worked closely with T/D as a tool, as there weren't really any good personal planners, and its design, though paper-based, was far better than anything else around. Another company bought the rights to T/D in the 90's; and I was happy to go "tool-agnostic" as there were many other tools showing up, and I couldn't in all honesty say that a paper-based one was the best thing for everyone. (The folks who acquired T/D actually took the training design I had developed and incorporated a whole bunch of it into their "corporate training" they used to sell books... that's why some people have run across their seminar stuff and wondered howcum it looks similar to mine. Hmmm.... I wonder.)
Anyway, Time/Design still has the best-designed materials in the paper-planner world (we helped them with some of their key features, back in the 80's, like a folding page for action lists that you don't have to re-write!); their graphic look and feel is still superb.