Don't underestimate the power of Visio in some cases - for free-form layout of text and graphics, you can get an awful lot done in Visio, and if you're already familiar with the tool, the results will probably be better than futzing around in InDesign.
Also, keep in mind that if this material is actually going to be professionally printed at some point, your graphics need to be really, really high res. Spare no pixels, even though you're scaling them down to fit the page. Professional printing will occur at much high DPI than your screen.
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-Scott
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