ashu , i am using fc4 quite recently iand will tell in simple approach . go to computer mamagement , delete the drive u wish to use for linux, it should be shown as free space green coloured . Then pop the cds and boot from them. Press Enter while asked for graphical install . Select correct language , keyboard and other options. When provided with
different types of install choose "custom install" as it will give u maximum freedom. Use automatic partition , check "remove all linux partitions" or "use existing free space". Beware , here dont select "delete all partitons" as it will eat your xp .
Or else if u choose custom partition with disk druid then in next box , click on free space , click new and create a /boot partition of 100 MB , all the file systems should be ext3 , click on rest free space , click new and create a swap partition , allocating double capacity of your RAM . If your ram is 256 MB then allocate the swap file system 512 MB . Then use the rest free space to create a / partition which is your root partition .
Next select the default boot OS , edit the names if u like . Chech Advanced boot options and let the boot loader reside in MBR . Next thing is to select the packages and then sit back and enjoy !! Ask for more . Will be delited to help.