I have a long line of CAT5 running from the family's wireless router, but it's starting to affect my performance. Sometimes I'll start to get packet loss and I'm pretty sure it's something up with the cable, as I've never had problems with transfers between the two PCs/Xbox on my side. Anyways, I was looking into getting my own network going with a few Linksys devices. I'll be able to control every aspect of my network and I'll have more room.
There are a few on Craigslist and I could get a Cable modem (BEFSR41) a 5-port hub and a WRT54G for about $50.
So my question is, can I use two modems in the same house? And will it affect performance if I split the cable into my TV and into the router?