When we Say SharePoint, we refer to two product of Microsoft (WSS and MOSS). On certifications front also, Microsoft has released 2 certifications each on SharePoint and WSS. One of the certification deals with the application development and others deal with the administration.
Below are the certification details
MOSS certification
1. SharePoint Server 2007 ― Application Development certificationhttp://www.microsoft.com/learning/en/us/exams/70-542.mspx
2. Microsoft Office SharePoint Server 2007 – Configuration credentialhttp://www.microsoft.com/learning/en/us/exams/70-630.mspx
WSS certification
1. Microsoft Windows SharePoint Services 3.0 – Application Development certificationhttp://www.microsoft.com/learning/en/us/exams/70-541.mspx
2. MCTS: Windows SharePoint Services 3.0 – Configuration certificationhttp://www.microsoft.com/learning/en/us/exams/70-631.mspx
