He's probably talking about WintenDoS, which is basically a simulation of XP on the DS, including a start menu and a textpad, along with a couple other programs.
As for XP itself:
http://www.microsoft.com/windowsxp/sysreqs/pro.mspx
QUOTE said:
•PC with 300 megahertz or higher processor clock speed recommended; 233 MHz minimum required (single or dual processor system);* Intel Pentium/Celeron family, or AMD K6/Athlon/Duron family, or compatible processor recommended
•128 megabytes (MB) of RAM or higher recommended (64 MB minimum supported; may limit performance and some features)
•1.5 gigabytes (GB) of available hard disk space*
•Super VGA (800 x 600) or higher-resolution video adapter and monitor
•CD-ROM or DVD drive
•Keyboard and Microsoft Mouse or compatible pointing device
We've got the pointing device, we can use our computer's CD-ROM or DVD drive (for the install disk, I'd assume).
Nintendo intentionally kept the screen's ppi low, because the higher-resolution screens are more expensive, and most humans seem half-blind. Also, older people WILL be using the system, so it would be unfair to them. 256x192 doesn't even come close to 800x600, or even 640x480 (which some emergency modes seem to run on, and which I believe is also the iPhone's screen).
How much RAM do we have? 4MB? I think that's less than 64, by quite a margin.
300MHz is also out of reach.
I'll check 98:
-66 MHz
-16 MB RAM
-vga
Much closer, and we could probably use a RAM extension, but it would still tax the system.
Still, I would have thought that we couldn't get any more than 3.11, which needs:
-MS-DOS 3.1 or later
-IBM compatible 80286 or higher (386 recommended)
-640KB Conventional memory
-256KB extended memory (XMS v 2.0 or higher)
-1MB extended memory recommended on 80286
-2MB extended memory recommended on 80386
Sounds like it would run perfectly.