How do I get my songs to music library and apps to show in Itunes

Yesterday I had to do a complete fresh install of iTune 10.3.1.55 on my windows 7 64bit machine. Previsouly to performing the fresh install I had my complete music library and iphone apps located on my network storage device drive as follows:

NetgearReadyNas\Itunes

on the drive are all the assocaited itune folders

itunes\itunes media

automatically Add to Itunes

Mobile Applications

Music

Podcasts

itunes Perferences

In the itunes perferences, advance tab I have my itunes music folder the same as it was before the clean install

\\NetgearReadyNas\Itunes

What do I have to do now in order that all my music libaray and iphone apps display again in iTunes.

Additionally how do I get my old playlist display back in the PLAYLIST on itunes.

Once I get them back into itunes will I be able to syn back to my iphone as I had to reset my iphone 3GS back to the default factory setting and need to reinstall my iphone apps and playlists back on the iphone.

Thank you for any help on this.