Thanks for the link squirrelmoose. Notice that I posted my dilemma right at the end of that thread. I'm not sure I can just boot the installation DVD and format the XP Partition because it is the System Partition. Notice that the Vista OS is in an Extended Partition on a logical drive, as is the other logical drive I want to keep that has all my data and applications. I fear that I may have shot myself in the foot by not putting Vista in a Primary Partition. Is there a way to deal with this situation - eliminating the XP Partition and reclaiming the space for Vista's volume?
P.S. See my attachment jpg that shows my partitions from Disk Management.