Dual boot help...?

Hey guys,
I am having some issues I cannot resolve here. I am considering retrofitting my Cincinatti Arrow 500 VMC to run on EMC/linuxcnc and the other day I downloaded the software with the intention of running it from the CDrom over windows just to get a feel for it. I know that this is something that it is supposed to be able to do from this forum. However when I burned the software to disk and then rebooted the computer and installed the disk it would not load the software correctly. So after tinkering with it for awhile I found that it said there is a utility that helps the software boot from the disk if it does not do it automatically so i installed that and tried again. This time it DID install the software and I was able to peruse the files and run the simulated EMC program on my windows laptop. All was right with the world then and I was enjoying reading about the setup and configurations etc.. However when I tried to reboot the computer the next day I found that now my computer upon startup gives me a dual boot option to open in Wondows 7 or in Ubuntu before windows loads. This is quite frustrating and I want to remove it and go back to JUST windows on my machine. I do not think it actually loaded UBUNTU onto the machine but it does act like it is on there. If you select ubuntu instead of windows 7 on startup it then goes to some kinda prompt and I cannot get it to delete this setup. Is there an easy way to remove the UBUNTU dual boot option and any software that is not supposed to be there? I actually liked the UBUNTU and LinuxCNC but I did not wish to load it onto my personal laptop permanently. If I could get it removed I would be happy. I am going to start researching how to build a proper computer for the retrofit using LinuxCNC here in a short while and will install the whole program and OS on that computer. Thanks so much for any help here. Peace

Pete