SSL Certificate renewal

I am trying to renew a wildcard SSL certificate in Windows 2008R2 IIS V7.5.

I have installed the p7b cert in to the certificates intermediate container (MMC, certificates, following Godaddy's article) and this was successful. However, when I try and add the .crt file by running the 'complete certificate request' it adds it but when I refresh the page or go to binding and try and bind it, it has disappeared.

Any ideas?

Thanks.

Instructions from Godaddy:

To Install an Intermediate Certificate in Microsoft IIS 7

1. Click Start, and then click Run....
2. Type mmc, and then click OK. The Microsoft Management Console (Console) window opens.
3. In the Console1 window, click the File menu, and then selectAdd/Remove Snap-in.
4. In the Add or Remove Snap-in window, select Certificates, and then clickAdd.
5. In the Certificates snap-in window, select Computer Account, and then clickNext.
6. In the Select Computer window, select Local Computer, and then clickFinish.
7. In the Add or Remove Snap-in window, click OK.
8. In the Console1 window, click + to expand the folder.
9. Right-click Intermediate Certification Authorities, mouse-overAll Tasks, and then click Import.
10. In the Certificate Import Wizard window, click Next.
11. Click Browse to find the intermediate certificate file.
12. In the Open window, change the file extension filter to PKCS #7 Certificates (*.spc;*.p7b), select the *_iis_intermediates.p7b file, and then clickOpen.

    NOTE: Do not install your Leaf Certificate in this area. Doing so removes your certificate from the list, and you must reinstall to correct the problem.

13. In the Certificate Import Wizard window, click Next.
14. Select Place all certificates in the following store, and then clickBrowse.
15. In the Select Certificate Store window, select Intermediate Certification Authorities, and then clickOK.
16. In the Certificate Import Wizard window, click Next.
17. Click Finish.
18. Click OK.
19. Close the Console 1 window, and then click No to remove the console settings.

To Install an SSL Certificate in Microsoft IIS 7

1. Click Start, mouse-over Administrative Tools, and then clickInternet Services Manager.
2. In the Internet Information Services (IIS) Manager window, select your server.
3. Scroll to the bottom, and then double-click Server Certificates.
4. From the Actions panel on the right, click Complete Certificate Request....
5. To locate your certificate file, click ....
6. In the Open window, select *.* as your file name extension, select your certificate (it might be saved as a .txt, .cer, or .crt), and then clickOpen.
7. In the Complete Certificate Request window, enter a Friendly name for the certificate file, and then click OK.

NOTE: For Wildcard SSL certificates make sure yourFriendly Name to matches your Common Name (i.e. *.coolexample.com).

1. In the Internet Information Services (IIS) Manager window, select the name of the server where you installed the certificate.
2. Click + beside Sites, select the site to secure with the SSL certificate.
3. In the Actions panel on the right, click Bindings....
4. Click Add....
5. In the Add Site Binding window:
   • For Type, select https.
   • For IP address, select All Unassigned, or the IP address of the site.
   • For Port, type 443.
   • For SSL Certificate, select the SSL certificate you just installed, and then clickOK.
6. Close the Site Bindings window.
7. Close the Internet Information Services (IIS) Manager window. Your SSL certificate installation is complete