Using chained SSL cer­ti­fic­ates with Cher­o­kee is quite simple: Given you decide in favour of StartCom/StartSSL, down­load their inter­me­di­ate CA cer­ti­fic­ate (Class 1, Class 2, or Class 3) and append it to your signed cer­ti­fic­ate:

cat your-cert.crt.pem sub.class2.server.ca.pem > your-chained-cert.crt.pem


and pass this new file as the server certificate.