Uninstalling a linux distro has been an oft asked question here, anyway, just boot into your Windows XP cd (assuming that is your other OS), select recovery console, and type "fixmbr" to erase the linux loader and put the windows boot loader instead.
You can after that format your partitions using any good tool.
But actually, in your case, you do not need to do all this, simple start the fedora install, and choose to install fedora on the partition(s) used by suse. After that, fedora will install its own boot loader, replacing that used by suse.
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Hardware - Celeron 266 MHz, 128MB RAM, Intel i740 8MB RAM
Software - Slackware Linux 10.1; Archlinux 0.7; Windows 98 SE
Humanware - GS/CS C++ L+++ w b+++ DI+ D+ e
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