to call the class

Hi,
You see that I added SimpleSql class below. But when referring to that amid Application1 class, I’ve got a problem. Pls advise.

http://cid-17ec75244bac022f.office.live.com/embedphoto.aspx/for^_sharing/fig29.jpg

or

http://www.4shared.com/photo/Wvq4Pzdt/fig29.html


Regards,
huamin