pkcs

http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/sag_cmimportexport.mspx?mfr=true

http://support.citrix.com/article/CTX109031&printable=true

About exporting certificate from IIS to netscaler

http://dev2dev.bea.com/pub/a/2006/08/pfx-pem-certificate-formats.html

http://www.grennan.com/CA-HOWTO-1.html