Install Oracle Drive on Microsoft OS

Here is what I found out:

"
I ran into the same issue and this is how I resolved it. Go to http://www.oracle.com/technology/software/products/database/oracle10g/htdocs/winsoft.html. Save Oracle Database 10g Release 1 (10.1.0.2) into your dard drive. In the saved directory under "Disk1" you will find an install directory. Under install, click on setup.exe. This will download the latest Oracle Universal Installer in your machine. This will only update your Oracle Installer to the latest version but will not install the latest database. Hope this helps. "

More info on the oracle forum
http://forums.oracle.com/forums/thread.jspa?threadID=285669