You don't mention where you got them from, but I assume that you are not talking about TomTom's own speed camera data (which behaves differently).
In which case, just connect your 700 to your PC and unzip the files into the map folder on your 700. The map folder will be called 'US' or 'North America' or something like that. Just put the .ov2 and .bmp files in the map folder, disconnect your 700, and restart it. They will then appear in the 'Manage POIs' and 'enable/disable POI' menus.
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