upgrading motherboard - do I need to re-install everything?

Hello

I have an ASUS P4PE motherboard which just died. I can't find an exact
replacement, so I had to go with a new P4P800 E deluxe (Still socket 478)

Anyway, before I install this new motherboard, my question is:

1) Will I need to format C and completely re-install Windows and all my
applications? I have the original Win XP on CD (Pre-SP2)

or

2) My C drive has Win XP Sp2 with all the latest updates. Can I perform a
repair or some kind or re-install the operating system only so that I don't
have to re-install all my other software in order to keep my settings intact
(i.e. ipod music, photo catalogs, etc..)

Thanks


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