It shouldn't make any diffenence, but on my setup (same as your trying to do) i had trouble with the RJ45 cable, i had a patch but should have had a crossover.
What make of router/wireless/momdem/thingy are you using?
If laptop is getting internet fine then its just settings. But I'm comfused, you seem to have a ADSL (broadband through telephone line -UK probably BT) AND DSL (seperate cable coming through put in by cable company- Virgin/NTL/Telewest/Sky)??
Best way i found to start any questions with forces is a FBD/sketch, then bulid it up from what info your given.
2.
F=m*acceleration
Force cause by friction > Fs=(Coef Kf)*(force from ramp, as the block has mg on ramp, ramp pushes back ( paired forces).)
components of mg will help as well
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