>Column1.DynamicBackColor="IIF(this.parent.activerow=RECNO(),RGB(224,254,254),RGB(255,255,255)) "
>and error message occurs "Experssion is Invalid, use valid expression for DynamicBackColor Property"

I may very well be wrong about this, but I remember hearing somewhere that while it's a column property, it's evaluated in the context of the grid. Try This.ActiveRow instead.

Actually, I just tested it, and it does work. I'm shocked. :-)