OK,
Unless you have an operating system disk to recover the Windows system there is no windows system to install!
What options do you have to obtain a working system (legally)?
You could purchase Vista recovery disks from a internet site, "PC manufacturer" (preferrred option), upgrade to Windows 7.
Obviously a manufacturers installation system disk would allow you to re-instate the system & from your recovery disk, your files & data, as they would match.
Therefore from the information you have provided, I would recommend that you contact the manufacturer of your system & purchase recovery disk for your system & recover your system & files from the disks you have already created.
Is this OK?