Cannot reinstall Vista

Hello All,

I have done extensive searching and trying of solutions but hitting a brick wall!  I am going to try to be as imformative as I can be about actions taken and hopefully someone will come up with something that I might have missed:

Problem:  I am trying to reinstall i computer (DELL Vostro 410) to original factory settings but cannot get it to work.

Initial Attempts:

1.  Attempt to install from recovery partition:  F8 > Selected Repair Your Compuer, I am then taken to a login windows that says 'Other User' and I cannot login with any of my accounts.  I have attempted to create new admin accounts but still cannot get past this screen.

2. Attempt to install from DVD (Originals supplied by dell):  Select Language > Install > Acces Terms > Custome - Advanced > Where do you want to install!  This is where the problem appears.  I am seeing 3 primary partitions as follows:

Disk 0 Pertition 2 RECOVERY 10GB

Disk 0 Partition 3 OS 288GB

Disk 0 Partition 4 1MB

When I select Partition 3 I get the following error "windows is unable to find a system volume that meets its criteria for installation". However this is the partition that the OS currently resides.

I have tried changing BIOS Boot order as suggested by microsoft: http://support.microsoft.com/kb/938984

I have tried removing all boot devices less for HDD. (little extra attempt based on microsoft kb above)

I have tried installing from command line as per: http://smsoftdev-solutions.blogspot.com/2009/03/how-to-restore-dell-factory-image-when.html

Any Suggestions?

thanks