Johnny - The SageCRM Outlook plugin doesn't have anything to do with Excel. I'm wondering if you meant Outlook 2010? Assuming that is the case... SageCRM 7.0 works with Outlook 2010 so... your client should have checked with you before getting the new laptops unfortunately.
I have asked my team to check on patches for 6.2 but our initial response is no unless you hear otherwise from me. Sorry!