Pl identify exact version of "10g" and exact edition of Win 7.
The install guide documents the requirements and the install process.
You will need Win 7 Professional - Home edition is not supported for any Oracle install.
If you have Win 7 Professional, you will need to install 10.2.0.5, which is the only certified version. 10.2.0.5 is only available from Oracle's support site, access to which requires a paid support contract