Deploy a web application windows 64 bit os.

Question

  I have an asp.net web application developed in framework 4.0. its back end is 10gR1.it use sap crystal report 2010  i deploye this application from windows 2008 server with 32 bit & iis7.0. i need to install my web application into a windows 2008 server 64 bit with os version 6.0 i nstall .net 2010 and 10g express edition. first time oracle connection is success, but crystal report is not working. so i install sap crystall report. but it is not working. now i instal 10gR2 now both crystall report & web application can not connect with back end. its iis is 7.5 version. how i can solve this problem?