account/password migration from FreeBSD-4.2 to SuSE 7.1?

Hello list, I am planing to migrate the account on FreeBSD-4.2 to SuSE 7.1. Is it possible to just copy the /etc/passwd and /etc/shadow? Any points need to pay attentions to? -- Patrick Hsieh Cyberwork Solution Inc., System Engineer http://www.cyberworksolution.com