Tab control on a Pocket 2003

Hi all,

I am using a tab control for a small program that should run on a Pocket PC.  When I run some simulator from VS 2005, it gives me the tabs and I can work.
Some other not and when I deployed on the pocket, I do not see the tabs. 
Deployment version : Pocket PC 2003 SE.

Do you think the CF version can answer to this and if yes, how can I upgrade the pocket PC.

Thanks for any response and have a good day,
Yvon