subscript & superscript in crystal report

Question

hi , I m developing application which contain information about chemical compound. all formula of chemical compound contains superscript & subscript. I store value in database using sub & sup Tag .but crystal report does not support these tag how can we change formula to subscript & superscript form in crystal Report as following NH4Al(SO4)2.12H2O if above task is not possible in crystal report(inbuild with VS.NET 2005) then please guide me what is the options available in vb.net to perform above task .