[Microprocessor ARM]set up keil to do work

Today I play with ARM Microcontroller ( ARM7 Philips(LPC2000) ).
and I follow manual in CD.
After everything setup finish manual require rebuild.
suddenly many bug show up.

first ,

--- Error: Can't execute 'arm-uclibc-as'
Target not created

I solved by
http://www.keil.com/support/docs/2942.htm
and look back to manual some step doesn't change setting ? or may be I forget to press ok?

second ,
error C318 : can't open file 'LPC214x.H'

this solved by
copy lpc214x.h from example project instead.

third ,
hex file is not built

before solve

solving in project > options for target

after solve

yah then it can build now.

good job u all.