Windows PC

Windows 2000 or XP

400MHz 256MB RAM 17MB free on hard disk

Full-duplex sound card (1998 or newer). Headset or speakers and microphone. USB handset is optional.

Macintosh

Mac OS X 10.3 or newer

667MHz G3, G4, or G5 256MB RAM 20MB free on hard disk

Headset or speakers and microphone. USB handset is optional.

Linux

SuSE or newer, Mandrake 10.1 or newer, Fedora Core 3, Debian

400MHz 256MB RAM 10MB free on hard disk

Full-duplex sound card (1998 or newer). Headset or speakers and microphone. USB handset is optional.

Pocket PC

Windows Mobile 2003 for Pocket PC

400MHz Wi-Fi-enabled

Active Sync must be installed on your PC before you install Skype.