2011 13 Inch MacBook Pro Questions

[ZFC]

Hey everyone so I just recently purchased a MBP and was wondering if my laptop has a chance of running D3 smoothly. Also if you pre-purchase the game can you download both mac client and pc client? The reason being I want to pre-purchase but am not sure if my current laptop can handle D3. I don't want to to get stuck with a game I can't use if I wind up getting another laptop, most likely a PC. Anyway below are my specs for my laptop. Any insight would be helpful. Also any advice on a laptop suitable for gaming under $1000 would be nice.

Model Name: MacBook Pro
Model Identifier: MacBookPro8,1
Processor Name: Intel Core i5
Processor Speed: 2.4 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Memory: 4 GB
Boot ROM Version: MBP81.0047.B27
SMC Version (system): 1.68f98
Hardware UUID: 9D44E6AB-BA48-56DB-A6C7-96D638B1003D
Sudden Motion Sensor:
State: Enabled

Chipset Model: Intel HD Graphics 3000
Type: GPU
Bus: Built-In
VRAM (Total): 384 MB
Vendor: Intel (0x8086)
Device ID: 0x0126
Revision ID: 0x0009
Displays:
Color LCD:
Resolution: 1280 x 800
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Built-In: Yes

System Software Overview:

System Version: Mac OS X 10.7.3 (11D50d)
Kernel Version: Darwin 11.3.0
Boot Volume: Macintosh HD
Boot Mode: Normal
Secure Virtual Memory: Enabled
64-bit Kernel and Extensions: Yes
Time since boot: 3 days 11:01

[Chaboi]

The processor is fine, the integrated graphics are where you are going to run into problems. Medium settings at a resolution under 1080p should be fine.

As far as pre-purchase, their were links provided on the front page to all of the download clients. On the list are the US-Retail versions, bot Mac and Windows download links are available.