Trying to turn an LED on

hi

I have a STM32F103RB based board that im trying to write code for to test the board. Previously i have only used 8 bit micros (8051 and pic's) so this is a step up. I have tried using the exam code found in this thread (http://www.keil.com/forum/17340/) however im still failing to get an LED to turn on.

here is my code:

#include "stm32f10x_lib.h"
#include "STM32_Init.h"
//#include "STM32F10x.s"
#include <stm32f10x_gpio.h>

//#include      <stm32f10x_cl.h>

//#define LED_On(led)           GPIOA->ODR |= (led <<1)
//#define LED_0ff(led)  GPIOA->ODR &= ~(led <<1)

int main(void)  {

int i;

        RCC->APB2ENR |= 0x0008;
        GPIOB->CRL = 0x00000003;

        for(;;){

           for(i=0; i<0x40000; i++){}
           GPIOB->ODR = 0x0000aaaa;
           for(i=0; i<0x40000; i++){}
           GPIOB->ODR = 0x00005555;
           }
}

i believe i have setup the jtag programmer correctly (segger unit). the build window looks like this after loading into the micro

Build target 'Target 1'
assembling STM32F10x.s...
compiling STM32_Init.c...
compiling main.c...
linking...
Program Size: Code=396 RO-data=252 RW-data=0 ZI-data=608
".\Bin\STM32F103B_ATTEMPT_3.axf" - 0 Error(s), 0 Warning(s).
Load "D:\\Program Files\\Keil\\ARM\\Jase Play\\LED_Blink\\Bin\\STM32F103B_ATTEMPT_3.AXF"
Set JLink Project File to "D:\Program Files\Keil\ARM\Jase Play\LED_Blink\JLinkSettings.ini"

JLink info:
------------
DLL: V4.20p, compiled Nov 19 2010 15:55:07
Firmware: J-Link ARM V8 compiled Jan 31 2011 18:34:52
Hardware: V8.00
S/N : 268000424
OEM : SEGGER-EDU
Feature(s) : FlashBP, GDB

* JLink Info: TotalIRLen = 9, IRPrint = 0x0011
* JLink Info: Found Cortex-M3 r1p1, Little endian.
* JLink Info: TPIU fitted.
* JLink Info:   FPUnit: 6 code (BP) slots and 2 literal slots
ROMTableAddr = 0xE00FF003

Target info:
------------
Device: STM32F103RB
VTarget = 3.390V
State of Pins:
TCK: 1, TDI: 0, TDO: 0, TMS: 0, TRES: 1, TRST: 1
Hardware-Breakpoints: 6
Software-Breakpoints: 2048
Watchpoints:          0
JTAG speed: 2000 kHz

Erase Done.
Programming Done.
Verify OK.

cheers for any help