How to install ubuntu over fedora 15 wihtout having tons of options in the Loader?

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http://askubuntu.com – I currently have Windows Vista and Fedora 15 dual booting on my system. I need to keep my vista for work related stuff, and as a fairly new Linux uses am having problems with drivers in Fedora (Wifi, Sound, Web Cam not working). I have used ubuntu on another system and find I am more comfortable with it. I want to install the latest ubuntu over my fedora partition, but I dont want the loader to be populated with 5 or 6 different boot options. I've read online that you can revert to the original windows logger by using the Windows CD, but I do not have that. Can anyone guide me on how I (HowTos)