colorcrayon

I'm a graphics artist / web designer. Most of my work is done at home. I'm having what I think are IP address conflicts. I have a modem where my internet comes in. It goes from there to a 4 port wireless router. I have one computer (my main desktop) hardwired with a cable to a port on the router. It works fine and I never have connection issues there. I have another computer (my entertainment computer) (both are running XP pro) which uses a wireless usb stick to connect to my wireless router and then to the internet. Then there is my laptop which I will often use for work while sitting on my couch or lying in bed. My laptop is running vista home and it never has connection issues either. My entertainment computer used to work fine with internet and everything. I have it tethered to my TV so i can stream movies and such from the internet to it. I use hulu.com alot because I like to choose what I watch. Either way it gave me an error the other day that said there might be an IP address conflict. Then since then it will connect to the router with a good strong signal but can't find the inernet. I have all my computers on a network because when i am working from the couch I need to connect to my main computer with my laptop for files and such. My entertainment computer says it is connected to the router but i can't see it from my other cimputers like I used to when i look at my network. The two computers that have no issues have IP adresses begginning with 192 but the one that won't see the internet starts with 162. I don't know if that makes any difference. I tried to use the "repair" feature when i right click the connection and it says it can't renew my IP address and to contact my network admin or my ISP. Since my ISP is useless and I am the admin ... i need help. So if anyone has any ideas please let me know. Thanks