Is it possible to put PHP in text widgets? I need to use some PHP to get a left-sidebar vertical menu (instead of the standard horizontal menu) ... I'm assuming I need to put it in a text widget or is there some other way to go about it?

Thanks
Laura S.

My favorite plugin for that is currently My Custom Widgets. There are other text widgets which will accept php as well.

Exec-PHP will allow this as well.
http://bluesome.net/post/2005/08/18/50/

This is one I like also:
Executable PHP widget
http://wordpress.org/extend/plugins/php-code-widget/