Oh thanks spunker I will check it, by the way I found the following info about updating WM03 to WM05 on windows mobile:
Mobile Gadget News :: Making Your Windows Mobile Life Simpler [Powered by Invision Power Board]
Dont know if someone know anything about it, in my opinion I stay on the side that Dell axim X30 and lower ver cant be upgrade it to WM5 or WM6. I love my X30 with WM03, and would like to have the X51v soon. Let see what happen