Computer for an Engineer?

I'm going to be studying engineering (civil) in college in the Fall and I was thinking about laptops. Which would be a better choice. Dell or Mac? The Dell is a: Latitude D630 -Intel® Core™ 2 Duo T7500 (2.20GHz, 4M L2 Cache, 800MHz) Dual Core -14.1 inch Wide Screen WXGA LCD Panel -2.0GB, DDR2 SDRAM, 2 DIMMS -128MB NVIDIA® Quadro NVS 135M™ -120GB Hard Drive, 9.5MM, 5400RPM -Genuine Windows Vista® Business Downgrade, XP Professional SP3 Install, E -8X DVD+/-RW w/Roxio and Cyberlink Power DVD™ -Intel® 3945 802.11a/g Dual-Band Mini Card -3 Year Basic Limited Warranty and 3 Year NBD Onsite Service OR a MacBook • 2.4GHz Intel Core 2 Duo Processor • 2GB 667 DDR2 SDRAM - 2x1GB (Supports up to 4GB) • 160GB Serial ATA Hard Drive @ 5400 rpm • Superdrive 8x (DVD+R DL/DVD±RW/CD-RW) • Keyboard/Mac OS - U.S. English • AirPort Extreme Card & Bluetooth Plus: AppleCare 3-Year Warranty Protection Plan Which one is better for engineering?