Need 2 Oscommerce sites corrected for SSL Checkout

We have 2 sites with the same error happening during checkout. The customer is getting prompted they may not be on a secure site. Both sites have a dedicated ssl but the sites do not appear to be going through the checkout process properly. The create_account is https, but the [login to view URL] jumps back to http and the [login to view URL] jumps back to https. So, the customer is getting prompted about not being on a secure site during that process. At least that is why we think they are reporting this to us and why it is happening. We need both sites reviewed and fixed so customers feel comfortable checking out. This is should be a very quick minor fix. We need an expert with oscommerce and ssl setup.