I went down to their distribution center / showroom today and just asked. They told me that when you buy a new computer from them, the first time you start Windows, you can choose your language. The guy was confident that the version of windows they ship everything with comes with all the standard European languages, though you can only choose once and then you can't change it later. If I get it home and that turns out not to be the case, I can return it, no questions asked.
I already have a keyboard, so that's not an issue. Czech keyboards can be kind of a pain in the ass, though, to be honest. Most of the keys are in the same place, and if you set the system to EN keyboard it works fine, but some of the symbols on the right (near the enter and right-shift keys) tend to be shuffled around to different places. The keyboard I have is an "international" QWERTY. It has all the Czech symbols printed on the keys to the right of the English standard letters and symbols (as well as some other symbols from different languages), but all the other keys are in the normal places. (It was cheap, too!)
Also, apparently they have a lot of Christmas specials going on, and if I buy the computer during the sales, I also get a free gaming mouse and a 60-day return period (instead of the normal 2-week return period). So that's pretty cool.
I've decided to hold off on actually buying it until mid-week. I've got a letter from the foreigner police waiting for me at the post office, and I want to make sure it's nothing life-altering before dropping 30,000 kc (about $1500) on a computer and a new monitor.
For the monitor, I'm planning to just get something cheap. I've been using laptops for so long that I really, really don't need anything big or fancy. Is there anything I should watch out for, or is it safe to just get a cheap one?