PCSX2 SVN r4531 is released. PCSX2 is an open source PlayStation 2 (PS2) emulator for the Microsoft Windows and Linux operating systems. With the most recent versions, many PS2 games are playable (although speed limitations have made play-to-completion tests for many games impractical), and several games are claimed to have full functionality.

PCSX2 SVN Changelog:
r4531
GS Window: Add proper zoom control and get rid of the "automatic" 4-pixel zoom in stretch-mode.
Zoom = 100: Exact fit to window without cropping anything.
Zoom above/below 100: Zoom In/Out.
Zoom = 0: Automatic zoom in until the black-bars are gone.
Keyboard: NUMPAD-PLUS: Zoom-In, NUMPAD-MINUS: Zoom-Out, NUMPAD-*: Toggle 100/0

Download: PCSX2 SVN r4531
Download: Official Beta Plugins Pack [09 August 2010]
Source: Here