content: New Modem/Router I recently changed my 'net provider to lessen costs and increase bandwidth.  I am currently renting their modem/router, but I wish to purchase my own.  I have Time Warner 50 MB/s service.  What should I look for in a modem?  Also, I currently have an old Linksys WRT54G to use.  Is this router still valid?  I have read some about open source routers, and while I really don't know much about network security, I am interested in protecting myself as much as possible.  TIA