Keil uversion with SAM7A3 problem

hi there, I am newer in ebedded design, i have a at91sam7a3-ek and a DEMO keil uversion, and a J-link, I can run the examples from their foulder, eg: the Blinky LED. but when I copied all of the c and header files to a new foulder, also did some settings. but the program stop working, give lots of errors:

Build target ‘Target 1’

compiling RTX_Config.c…

compiling Retarget.c…

assembling SAM7.s…

compiling Blinky.c…

linking…

RTX_blinky.axf: Error: L6218E: Undefined symbol _init_box (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_clock_TCB (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_clock_interrupt (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_get_TID (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_get_first (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_put_prio (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_put_rdy_first (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_rdy (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_runtask (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_time (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol tstclrb (referred from rtx_config.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_dly_wait (referred from blinky.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_evt_set (referred from blinky.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_evt_wait (referred from blinky.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_sys_init_user (referred from blinky.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_tsk_create_user (referred from blinky.o).

RTX_blinky.axf: Error: L6218E: Undefined symbol os_tsk_delete (referred from blinky.o).

Target not created

can anyone please help?

And where I can find a step by step example for my sam7 board with this uversion software?

Thanks a lottttttttttttttttt

Ben