As Laurent already posted on his site; Oracle has made Oracle 11g for Windows (11.1.0.6.0) available on OTN.
So you are now able to download it if you prefer the Windows platform instead of Linux.
Current available versions…
Oracle Database 11g Release 1 (11.1.0.6.0)
Standard Edition, Standard Edition One, and Enterprise Edition
- Download Microsoft Windows (1.7 GB) – Including Client, Examples, Gateways, and Clusterware
- Download Linux x86 (1.7 GB) – Including Client, Examples, Gateways, and Clusterware
- Download Linux x86-64 (1.8 GB) – Including Client, Examples, Gateways, and Clusterware
Marco