They're a bitch to get off and put on, I'll tell you that much. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'> For the rears, where the rubber lines meet the hard lines, you need the special 10mm brake line bolt loosening wrench. This, while already very small, will be a tight fit in the even tighter spot somewhere in the labrynth of your rear subframe and suspension components. You break the bolt with this special 4-sided (?) brake-line-breaking wrench, then use a standard 10mm to get it off.
For fronts, it's a lot easier since everything is withing reasonable reach. You just jump in w/ the special 10mm wrench, and take the stuff off. I don't remember if the front bolts (hard to rubber line connection) were 10 or 12mm, but the special wrench you buy will likely have a 10mm side and a 12mm side.
For both front and rears, you will need a 12mm socket/wrench to loosen the banjo bolt where it connects to the caliper.
If I didn't describe it clearly enough, feel free to ask more specific questions. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>
edit: don't forget a set of (ideally curved) pliers (I like to use a flat head screwdriver w/ hammer) to pry the retaining clips off the brackets, too. To put them back on is easier, since they won't be locked up in 10 years of dirt and grime.