shower curtain "cap like" grommets

[Neenm]

Hi All,

Does anyone know where I can get the "cap like" grommets that are used to slide the shower curtain in its overhead (well, for me
) track? I've looked at all the hardware and sewing stores in my area and can't seem to find them. I did find them on-line here:

http://www.snapfastener.com/snaps/caps.htm

(you might have to type the link directly into your browswer)

But these guys don't seem to respond either by email or phone.

Any ideas?

Thanks!

Nina