Microsoft Internet Explorer provides a Certificate wizard tool to convert between formats. For more information, see To Convert Certificates With Internet Explorer.
Double-click the certificate file.
The Certificate Information window appears. See Figure 3–4.
Click the Details tab.
See Figure 3–5.
Click Copy to File.
The Certificate Export wizard appears. See Figure 3–6.
Click Next.
The Export File Format window appears. See Figure 3–7
Click Next.
The File to Export window appears. See Figure 3–8.
Browse to the certificate file name.
Select the certificate file and click Next.
The certificate details are displayed in the window. See Figure 3–9.
Click Finish to exit the wizard.