Microsoft Windows 2008 Certification Authority Renewal

I am fairly new to the Windows Certification Authority and our is expiring next month.  I want to make sure that I do not break anything when renewing.

I know I have to do the following on the CA | All Tasks | Renew CA Certificate.

But is there anything special that needs to be done to renew the Certification Authority or anything I should look out for?  We only have 1 CA.

thanks, in advance,
Bob