For laptops there are three places you should check:
Linux on Laptops
TuxMobil
LinuxQuestions.org HCL
Searching those links produced only one usable result, but that one is gold for your lappy.
http://www.michaelminn.com/index.php...shiba1905.html
NewEgg has a good policy of allowing returns (at least for me), though sometimes you'll lose money because of shipping and restocking fees. If you have a qualified, reliable, local dealer (BestBuy != either) you can probably get some good advice and the appropriate product.
NB: Most people are only going to know about Windoze, so don't get into an "ACPI technical discussion" unless you first learn they actually run Linux, and can compile a kernel for any hardware. Otherwise, you might as well speak Chinese to them.
Also, ACPI does not work well in the Linux kernel (up to and including 2.6.16.20) with a lot of hardware. This is the voice of experience -- I build and repair computers. It hasn't worked on at least 4 Asus boards, a number of different laptops, and I have a Sony VIAO laptop which burned up in 2003 due to overheating while running Linux.
You might have found this site which tells of the Omnibook kernel module:
http://web.archive.org/web/200606182...iba-1115-s103/
Before doing all this, however, I'd get the latest Linux kernel and give it a try -- 2.6.17 stable just came out today, and you might note that there is going to be continued support for 2.6.16 -- which I presume will be kept in 2.6.16.20, but don't know for sure.
I have a Toshiba Satellite A65-126S, and ACPI in the Linux kernel hasn't worked properly, nor been anywhere near fully supported, up to and including 2.6.16.20. Before I flashed my BIOS, if I rebooted (with any option) the laptop would shutdown but then hang without shutting off the power. Since I flashed the BIOS, it will shutdown, and NOT reboot, no matter which reboot option you give it. Before anyone suggests it's the hardware, I'll tell them that ACPI is fully functional in Windoze.