Can rock band 2 go with rock band 1 equipment?

Yes, in fact most all equipment is compatible with Rock Band 2. All Rock Band, guitar hero 3 and up, and band hero instruments are compatible. Plus all Rock Band instruments can be played on the Wii version of Rock Band 1 and all the other instruments (band hero/guitar hero) can be used on the Xbox and Ps3 versions of Rock Band 1.