I recently bought an Express Card Compact Flash Card adpater from eBay and it arrived today. I am very pleased with it. It was cheap, works perfectly and fits completely flush inside the laptop. When inserted, the CF card only protrudes a small amount. Here's the item I bought....
http://cgi.ebay.co.uk …eName=STRK:MEWN:IT&ih=018![]()
My CF cards are definitely not high speed but I got read throughput of between 7-8MBps and write speeds of ~3.5MBps.
Here are some photos to show it in use.

