how to save user entered configuration data from build to build

Hi there,

Please reply to my query.I want to save user entered configuration data from build to build.i am working in Windows mobile 5.0 in VC++.making the CABS files for the installables using INF files.I want to save the configuration data when the user overwrites the build with other build.How can this be done using INf files.Because In Pocket PC 2003 this problem got saved.I tried the same out here,it does not work.

If any one of you have the answer,i know quite of you will be able to help.Waiting for the reply.

***is there any way to retain some files during overwriting for windows mobile 5.0 Any functions or strings or keywords that i can include in INF files so that during overwriting it does not overwrite those files which i want to retain.