K8SRE Riser Card (M2057)

Hi,

We have a Tyan K8SRE motherboard, which has one PCI-X slot at the far
edge of the motherboard. To use this, we're trying to locate the
required M2057 riser card as listed on the Tyan Riser Card Matrix
(ftp://ftp.tyan.com/matrix/matrix_riser.pdf)

Unfortunately, Tyan's website does not list this item for sale, and
even if they did they only sell to USA customers - we're in the UK.
Having done extensive googling, I can't find a single UK/European
supplier. Does anyone know of any way we can get hold of this part?

Many thanks.