Computer crashed, moved iPad to new PC...

I had the iPad on a PC, life was great and then it crashed. That computer is now in the trash and i have a new laptop, i installed iTunes fresh tonight and connected my iPad. It wants to erase my iPad which has all my apps on it that i don't want to lose in order to sync. It keeps prompting me to erase my iPad. How do i get around this, surely if your computer crashed and your iPad if full of data you cant be expected to give all of that up just because you switch PC's?

Help.
Thanks