Both of these were present on my PC before a clean install, and now after installing all the drivers according to the Dell website, in the correct order, I don't have either "Intel Trusted Connect Service Client" , and "MSXML 4 SP2" which were originally seen in Programs prior to my installing of a new SSD and Windows 7 -64 bit? What are both of these and do I need to install them as would like my system the same as it was prior to the clean install?