I managed to go through the OPDA process and have now obtained a certificate, which resides in My Docs on my computer. I assume that it should make it's way into my N95 for it to work. I have no idea how to do this and would appreciate an instruction as to what to do next.
Thanks.
To sign apps on my phone I used "MobileSigner" with the key and cer files from OPDA.
I downloaded "Mobile Signer" (just google for it), and installed it onto my N95 8gb.
Then copy the '.key' and '.cer' files you got from OPDA to a folder on your N95. I made a folder called "Manual Install"
Also copy the '.sis' file you need to certify to the same folder on the phone.
Now run Mobile Signer. Using your phone cursor scroll down to 'Sis file' and click on it.
You can then navigate to and select the 'sis' file. The 'sis file' name should now appear in 'Mobile Signer'
Do the same for the 'key' and 'cer' file.
I think I used anything for the password (e.g 0000).
Then select 'options - sign'
You should then find a 'sisx' file in your folder. Double click on it, and it should install your application onto the phone.