Are European quotation marks (not smart quotes) available? They look like: << and >>. They don't seem available among special characters, even Unicode.
They are certainly in Unicode: 00AB, 00BB, Latin 1 Supplement «»
On a US keyboard layout, they are at option/alt plus \ and option/alt plus shift plus \
What layout do you use?
Why do you mean 'available' ? If you set the keyboard to a language that uses them, you should see them on the keyboard layout. Use
System Preferences --> Language & Text --> Input Sources
to make the OS show a keyboard viewer in the language icon menu in the menu bar.
Retrieving data ...