Reversing Pocket PC Apps

hi,

i have a problem with reversing some pocket pc app. i copied all the files from my pocket pc(acer n30 running microsoft windows mobile 2003) to a folder on my hd. then i let ida run on the program. it detected an arm executable file. then when the disassemlation starts im asked for some additional dll files. those are:
commctrl.dll
COREDLL.dll
AYGSHELL.dll
i installed:
c++ 4 embedded edition
sdk for windows 2003
sdk for windows ce .net
but none of those packages does contain the files i need. i also tried copying the files from the pocket pc's windows directory but it gives me an error that the files are in use and cant be copied. can anyone tell me how to get those files from my pocket pc or where to find them?

thanks

dream