Mac or PC? humm what to pick?
Well, doesn't really matter! The OP said he wanted PC, so that's the info I'll provide you with.
Anyway I do have something to hopefully contribute, I run an HP laptop and think the color of their High Def monitor is just fine. However, I don't do much printing so take the last statement with a grain of salt. Anyway, If I were going to buy a new laptop with your budget (which is huge) this is what I would get. Take it how you want, buy exactly what I show you here or pick your favorite features and find a cheaper laptop or different brand as you choose.
Newegg.com - HP HDX 16-1140US NoteBook Intel Core 2 Duo P8600(2.40GHz) 16" 4GB Memory 500GB HDD 5400rpm DVD Super Multi NVIDIA GeForce 9600M GT - Laptops / Notebooks This is probably the laptop I would get. 2.4 Ghz processor should be plenty of power, I've been using a 2.0 GHz with photoshop and really don't have a lot of trouble. Its a bit slow if your doing complicated effects, but its really no hindrance. Just take a drink and the process is done. 2.4 should speed that up a bit.
-Windows Vista home premium 64bit
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Widescreen, Hi def monitor
-500 GB hard drive
-Wireless internet (A,B,G,N so there's no network you cant connect to)
-4GB of ram
-Nvidia 9600 GT, I have this in my desktop and its a fantastic card. Also it has 512 MB DEDICATED memory. You really want dedicated otherwise you'll have to share the RAM with the video card and that just slows things down.
-at 7 lbs its a bit heavy but mixed in with books you shouldn't notice it.
$1150 ($1100 with rebate)
Next, you can upgrade the RAM but 4GB really is enough. However, if you want more you may have trouble. This laptop seems to have a bus speed of 1066 MHz which is VERY fast for a laptop. I don't think you'll need more but you'll easily pay $100 per 2GB stick. Sorry I cant provide a link to the RAM but I cant find any I like, and Newegg didn't have any. You'll need to check the RAM when you get a laptop to make sure if you buy more you buy the same bus speed otherwise you'll slow everything down.
Expect at LEAST $200 if you decide to upgrade.
Next you'll want a bigger a battery for those long boring classes. I had a 3 hour class once a week.. it sucks when the laptop dies.. Trust me lol

anyway, it comes with a 6 cell, this is 9:
Newegg.com - HP GJ114AA 9-cell Lithium-Ion Battery for HP Pavilion HDX 9000 Series - Batteries / AC Adapters 12 cell would be better, but this should get you through the longest classes, if not then just keep the 6 cell charged and in your bag you'll be fine. I'm not totally sure this one is compatible with the laptop I suggested, so just double check should you buy it.
$104 is pretty average for laptop batteries anyway.
What Ive provided are personal suggestions. When you buy a laptop just make sure the accesories are compatible and youll be good to go.
$1450 total and you have extra money for a laptop bag and other accessories like like card readers, tablets, bags, or whatever. Above is what I would do, Ive been through a year of school with a lesser computer and I did just fine.
Hope I helped somewhat!