How hard to change hand grips on a bike?
I'm very much a newbie - haven't been on a bike in almost 20 years, and just getting back into it. I'll be doing the Seattle to Portland ride in 2009. I currently have a Schwinn 21 speed aluminum hibrid with the t-bar handlebars that I'll be training on until I can get a better bike. I want to change out the grips on the handelbars to some that are more comfortable - not sure what they're called, but they have a a wider part that heel of your palm sits on to make it more comfortable. (I've test ridden several good bikes and they all seem to have these grips.) Is this something I can do on my own, or should I let a lbs do it? Also, is handlebar tape purely cosmetic, or is there a function to it?
Thanks!