It's seems like everyone is in love with this game. If you can get it to run on your system it's a good bet you will be too.

Source: GameStats.com

BioShock is one of the very few Direct X 10 Games that are available now, or anytime soon.

Think you got what it takes to play BioShock? Read 'em and weep.

Operating Systems: Windows XP (with Service Pack 2) or Windows Vista

Minimum System Requirements:
CPU: Pentium 4 2.4GHz Single Core processor
System RAM: 1GB
Video Card: Direct X 9.0c compliant video card with 128MB RAM (NVIDIA 6600 or better/ATI X1300 or better, excluding ATI X1550).
Sound Card: 100% direct X 9.0c compatible sound card
Hard disk space: 8GB free space

Recommended System Requirements:
CPU: Intel Core 2 Duo processor
System RAM: 2GB
Video card:
DX9: Direct X 9.0c compliant video card with 512MB RAM (NVIDIA GeForce 7900 GT or better)
DX10: NVIDIA GeForce 8600 or better
Sound Card: Sound Blaster® X-Fi™ series (Optimized for use with Creative Labs EAX ADVANCED HD 4.0 or EAX ADVANCED HD 5.0 compatible sound cards)

Vista Experience Score:
Processor: 5.0
Memory (RAM): 5.2
Aero Graphics: 5.3
Gaming Graphics: 5.4
Primary Hard Disk: 5.4

Important Note: Game requires Internet connection for activation

The demo for BioShock is 1888 MB alone! So right there you have a hurdle to overcome. You can try downloading it from one of the gaming sites, but most are overwhelmed right now. It is available on Bittorrent from what I read. I wanted to download it from Steam, but even they were maxed out. I ended up using GW Channel's PowerGrid application to stream it down at speeds averaging 3,912 Kbps. Whoo, hoo!