To get all glyphs and characters go to: 'System Preferences/International/Input Menu' and check the 'Character Palette'. Now you'll see your country flag in the menu bar which can then be clicked on to reveal the character palette that contains every single glyph that the system has. Now when you need something in particular double click on the glyph and it will be automatically inserted into the text input area.

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MacBook Pro 15" | Mac OS X 10.6 • 2 GHz Intel Core Duo • 2 GB DDR2-667 • ATI Radeon Mobility X1600 128 MB • 100 GB Serial-ATA
Hackintosh | Mac OS X 10.5.6 • 3 GHz AMD Athlon 64 X2 6000+ • MSI K9N AM2 • 2 GB DDR2-667 • NVIDIA GeForce 8800 GT 512 MB • ALC888 Audio • 300 GB Serial-ATA
iPhone 3G • 8 GB