Vista 32bit drivers are available at the Dell support page for that model. None were seen for the 64bit however. The 32bit RC shouldn't have any problems going on and running. What is seen in the recovery partition is all the original drivers as well as prepaged softwares for XP there.
I've heard the name easeus being a free partitioning program while booted in Windows which can't reformat a partition you are seeing Windows loaded from. In order to remove the recovery partition entirely if you no plans of restoring XP with a set of recovery disks booting from a live cd in order to run a different drive tool independent of any OS being loaded would be the option there.
The tool in mind used regularly here is the Gnome Partition Editor better known as GParted live for cd being a free Linux partitioning tool. It works on a multiple OS basis and can read up on at GPARTED DOCUMENTATION - GENERALITIES
Some additional screens are also seen at GParted -- Screenshots
The latest stable release 0.4.5-2 is found at SourceForge.net: GParted: Files
Note that comes in zip file and ISO disk image form. You will need a cd writer or dvd burner in order to burn the iso image to a cd-r as well as any burning program that supports ISO burning like ImgBurn or a few others I name off here.
As far as regret for replying here? naaaa.... I'm simply too stubborn!
Besides the GParted live cd the latest ubuntu 9.04 release a live for cd Linux distribution also sees the latest of one of the latest versions of GParted included as well. If you lack a burner but have a usb flash or pen drive onhand you can also use a "usb key" for one of the iso images either for GParted or ubuntu. USB Windows 7 Installation Key Drive - Create
In fact there's a link there for an excellent shareware version of UltraISO where you can make up a 7 usb key saving on blank media while the idea of GParted or ubuntu live is simply for repartitioning the drive there.