Help... I just moved into a new condo that is prewired. I do have an ISP through the local cable company. Can I direct connect my comp. into the RJ45 jack or do I need to use a router? Also, I am not familliar with the vrious types of connections. I have the typical Blue RJ45 jack and the yellow ...does it matter which one I use? Thanks in advance for your help. tech out..