[pstricks] \scalebox incompatible with \documentclass{minimal}?

[Joel Salomon]

I've been trying to generate embeddable diagrams with PSTricks, and it
seems I cannot use \scalebox (or \LARGE, for that matter) in a
document I've begun with \documentclass{minimal}.

Does this make sense to people, is there a work-around, and is there a
real reason to use \documentclass{minimal} rather that
\documentclass{article}?

--Joel