I installed 12.10 using Wubi but i found that there were issues with it (really slow and I could not install skype). According to the Ubuntu website when running Wubi you can choose 12.04 or 12.10 but I can not see how
To install Ubuntu 12.04 with Wubi, type this in Google or another search engine:
Click on the C-Net download to get Ubuntu. This takes you to a working download for Ubuntu 12.04.
Such web-search based techniques are often helpful for downloading Ubuntu files when you are having trouble finding the right file because it's old, or when there is a problem with the Ubuntu website, with your browser or proxy (e.g., due to caching problems), or just a network slowdown somewhere in between.
Just make sure you're only downloading Ubuntu (and any other software) from sites you trust.
You can always go to
Alternatively you can download an ISO image for the version you want to install with Wubi, then unpack the ISO image (7-zip will do this) and run the