you'll need a pair of sata cables.
and here are some other cases, I just picked that particular lian li cuz it's inexpensive and nice and simple. here's another lian li midtower that says it's got usb/firewire/audio:
http://www.newegg.com/Product/Product.aspx...N82E16811112116 ($130)
here's a gigabyte tower with decent reviews also with usb/firewire/audio:
http://www.newegg.com/Product/Product.aspx...N82E16811233002 ($120)
and here's the case i have (thermaltake full tower), also with usb/firewire/audio:
http://www.newegg.com/Product/Product.aspx...N82E16811133143 ($170)
my case is very solidly built, has plenty of drive bays, removable motherboard tray, is light as a feather, cools well, etc. that lian li is also really nice though, has the same amount of internal 3.5" bays, includes two additional fans so it probably runs cooler and also isn't as flashy looking which i consider a plus. i don't know anything about the gigabyte tower, i just picked it to give you another option.
i dont' know anything about wireless networking, but here's a highly rated super cheap 802.11g card:
http://www.newegg.com/Product/Product.aspx...N82E16833158017all the draft-n stuff on newegg is pricey and has crappy reviews so i'm not gonna pick any of em :/
but yeah don't forget to check out zipzoomfly and all that cuz with all the free shipping and maybe cheaper stuff, you could save like $80 or $100 or whatever