changing the \usr\sap directory

hi all,

i have currently installed sap erp6.0 abap on windows 2003 and oracle 10g platform. I have made a mistake on pointing the \usr\sap directory to different drive. i installed it on a sapdata directory. the installation was sucessful. now, i need to move \usr\sap to the correct directory. what would be my steps to do this? this is what im thinking of:

1. uninstall the erp using sapinst without dropping the database

2. install it again and point \usr\sap to the correct drive

will it be this simple? if ever, what problems would i encounter?

hope you can help me with the proper steps to do this..

thank you very much..