the retrofit source is a great place to get parts and read up on some of the easy options
http://www.theretrofitsource.com/
they have things like the mini h1 and d2s that just bolt in through the existing bulb holes in your headlight
ideally if you want hid high beams you should look into a bixenon projector retrofit, then you can keep your DRLs with the proper harness, still have flashable lights and get xenon highs
the problem is that hids dont instantly turn on, they have to warm up, over the life of the car you might not notice, but if you flash to pass other drivers might not see. Depending on your ballasts there is potential for hot restrikes to impact ballast life too
you need to disable your DRLs, HIDs arent made to function at partial power which your high beams are being fed as DRLs. On 8th gens there was a fuse, #37 that you could remove to deactivate them. It may not be 37 on your car but removing whichever fuse controls the DRLs should stop the flickering.
Mostly, the mac is the computer i use daily and take to class, video/photography and papers are done on the desktop cause its more comfortable, netbook is part of my computer/network repair kit and also used on presentation days since the mac doesnt always play nice with classroom projectors...