SSD upgrade on SZ280P, drive not detected by Windows! Help!

[yas9]

Hello!

I'm using a SZ280P and was trying to replace the original 120GB HDD with a SSD Drive (OCZ Core v2 SATA 120GB).
In Bios the SSD has successfully been detected as a 129GB drive (yes, 129GB :smileyhappy:), so everything alright.

Then I was trying to install Windows 7 on the SSD but I got stuck.
When it comes to the point where it asks where to install windows, there is no drive listed..

Any ideas what to do to get Win finally installed?
Is there a driver needed? And where could I get it?