Originally Posted by HillRider
Depending on the age of the chain and former cassette, you should consider a new chain too. Old chains and new cassettes (or the reverse) often have skipping problems since the pitch spacing isn't spot on the way it is with all new or all worn components.
I was planning on buying a new chain and sizing it the same as the chain I was using previously.
I guess I was also wondering if the chain should not be slightly longer to accommodate the larger cassette?