well for winodows I would use http://wintoflash.com/download/en/
and for linux. are you sure you are doing it right?
and do this.
# Download and install Infra Recorder, a free and open source image burning program.
# Insert a blank CD in the drive and select Do nothing or Cancel if an autorun dialog pops up.
# Open Infra Recorder and click the 'Write Image' button in the main screen.
* Alternatively you can select the 'Actions' menu, then 'Burn image'.
# Select the Ubuntu CD image file you want to use, then click 'Open'.
# In the dialog, click 'OK'.
as seen here.https://help.ubuntu.com/community/BurningIsoHowto
and are you getting the right thing?
its an iso. odds are you need 32bit.
and then there is the easiest option. use wubi.http://wubi-installer.org/index.phphttp://wubi-installer.org/faq.php