I posted this in another forum, but thought others might like to know
I was wanting to add the new Terratec 2400i Dual DVB-t tuner to a HTPC case (LC11-m) and still keep a slot free for a pci-e graphics card.
Found many risers available from here http://www.adexelec.com/pciexp.htm#EPERXP.
I enquired and you can get one sent direct from the manufacturer to the u.k for about £40. They can even make it to you exact requirements i.e 'User can order the riser with PE-X1, X4, X8 or X16 and PCI-32 or PCI 64 connectors'. Even the length of the cables can be specified!!
Not bad!