First, thanks ninjafox for doing the legwork to find what works. The one you mention is $13.00 shipped on EBay.
I tried an Intel WiLan 1000 card, which has the advantage of being a single-chip Centrino product (think low power use) and got the silly message. Very anti-competative behavior on Lenovo's part--- maybe even illegal.
For those who care, the issue is indeed a whitelist; for many of the other IBM / Lenovo notebooks there is a hack which can change the CMOS (not the BIOS) to shut this silly checking off. The setting isn't externally accessible, but they have a bootable program to do the trick. If it ever becomes available for the S10-2, I'll run it. (It is just a setting, so if you have a problem you just pull all power including the CMOS battery to recover).
In the mean time, I'll run the card ninjafox mentioned.
One big reason to go with Draft-N is that many routers fall back to the slowest protocol of any system attached to them. This is true for the cheaper ones that aren't dual-radio. So if you have all N devices and one B or G, you fall back to the slowest of the three that's active on the WiFi LAN!
A bunch of us ought to get together and complain to the FTC and the EU Trace Commission about these anti-competitive practices. ASUS et. al. don't pull the same stuff.
I have a feeling that the same sort of restriction will keep us from using the other mini-PCI for "non approved" uses, such as supplemental SSDD, other than Lenovo's own 3G.