Backing up contacts from iphone

[yellowbelly]

Right well after nearly 2 years of owning my iphone4 i need an app that requires the latest software update, i have not once performed a single update since getting the phone. I have backed up my photos and music on itunes but want/need to backup all my contacts.
When searching for an answer on this it seems possible if i were to have a MAC however i dont, just a laptop

Can someone help me here

 

[paddymph]

So you've never been updating to iCloud?

 

[yellowbelly]

Correct!

 

[glowworm105]

Im pretty sure if you go to itunes and install the update through there it will backup and then restore the phone to how it was all by itself , when i got a new iphone i synced the old one to itunes when i got the new one i plugged it in and restored it and all my contacts etc were there