Greetings --
No, you can't reinstall the OS without the installation disk,
unless you have one of the OEM installations that uses a hidden
Recovery partition on the hard drive.
If it was a retail license and you have proof of purchase:
How to Replace Lost, Broken, or Missing Microsoft Software or Hardware
http://support.microsoft.com/default.aspx?scid=KB;en-us;326246
If it was an OEM license, you should contact whomever sold you the
PC, or the PC's manufacturer.
Bruce Chambers
--
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