I recently purchased an HP iPaq 1945 (closeout at Sam's Club - $100!). I'm not certain as to what read/write "speed" SD card to purchase. There are "standard" & "high speed" SD cards. I will be using the 1945 for labor intensive uses - watching movies, viewing 2-3 MB photos, etc. and am wondering if a high speed SD card will perform better or is it the actual processor (266 MHz) that will determine how "fast" the unit will perform. I do realize that the size of the movie files can have something to do with performance. I'm hoping that 1945 and/or SD card will be able to keep up with fast action movies and not take much time to view large MB photos. Any help would be appreciated.