As you all already know GTA IV for the PC is coming in November ,now according to the Games For Windows listing, GTA: IV will hit PC on November 18, 2008.

Microsoft's website also included a list of PC exclusive content and features:

•  New high resolution technology brings Liberty City to life with even more stunning graphical detail.
• *Expanded multiplayer will require even more strategy and skill to come out on top.
•   Match Filtering allows you to pick your favorite multiplayer options and then instantly find online matches that fit.
•   Record gameplay clips and edit them together with a variety of options using the Video Editor and upload via the Rockstar Social Club.
• *Optimized for PC controls and Xbox 360 controller.

The Games For Windows listing says that the recommended system requirements will be announced soon, but a rumor has it that they were listed briefly and that they were:

OS: Windows XP SP2
Processor: Dual core processor (Intel Pentium D or better)
RAM: 2GB
Hard Drive: 18GB free hard disk space
Video Card: 512MB Direct3D 10 compatible video card or Direct3D 9 card compatible with Shader.
Drive: DVD-ROM dual-layer drive

Those might not be the official Specs since they didn't mention Windows Vista nor did they sepcify the processors speed ,either way, i need a new computer ASAP!