[XSL] conditional based on the first element of a list?

I'm using the ASPDotNetStorefront software... sticky stuff, I wouldn't recommend it unless you're fluent with XSL... but I finally tracked down where the menu elements get created, and I have a problem. I need to run a conditional check to see if the current element is the first one.. if not, it needs to add some text. The text isn't the problem, the conditional is. It's all data-driven, so it's database material.. but I have no idea what the syntax would be for this stuff. I realize it's vague and specialized software, but if anyone could suggest anything, I'd be very grateful.

PS: Please don't suggest google... I've tried it, and I've found nothing pertaining to my problem. ASPDotNetStorefront support doesn't help either... can't find any references to this function in their site. grrrrrr