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You need to use either a wired LAN or an 802.11g network for speed reasons. I have heard that the Belkin card is good quality and should provide you with the speed you need.
If the notebook has an 802.11g network card then you won't need anything else as you can just use an Ad Hoc network setup. If the notebook is 802.11b then you will probably need to buy a PCMCIA 802.11g card for it (again for speed reasons) although the 802.11b card will connect at a slower speed. If the notebook has an 802.11a card then you will need a PCMCIA 802.11g card otherwise it will not connect.
The thing to remember with a wireless network is that the speed of transmission can reduce quite quickly over distance. The number of walls that the signal has to penetrate can also reduce the signal very quickly.
If you want to use the Vaio Media application then it will need to be installed on both computers (Both computers must be Sony).
I would wait for further info from others - Intradink, where are you? 
:smileygrin:
What you need is the following. ( I have the same and it works fine)
- TV cable mounted to your PC in cases that you want to record TV. Of course you need also an TV card in your desktop
- the belkin ADSL wireless router will work
- a wireless access point to connect to your roomlink ( I work both with the sony access points, on my desktop and with roomlink)
- I would suggest the 802.11g connection otherwise the quality will be poor and slow
- It is likely that you first must install an ip address on the wireless access point (room link) since you can not install it with your TV. So connect first the wireless access point to your PC for installing the IP address
Configuration:
- Your desktop is the server and is connected to the ADSL router
- Laptop connected to the ADSL router
- Internet connection the same
- sharing of internet is not needed since every PC has its own connection
- start media server and check if access from other devices is permitted
- then ask authorization for every device, so desktop, pc and roomlink
- It is advisable to disconnect temporary the firewall on the desktop and laptop. Check also if in the ADSL router a firewall is included.
- I needed to figure this out myself since the Sony manual is really poor. 
This should work,
Good luck
Jeroen
I would wait for further info from others - Intradink, where are you?
Sorry.... missed this one. :smileyblush: I agree with what's already been said and not sure if I can really add anymore at this stage :smileyblush: . Also I've never used the RoomLink or MediaServer (?).
My 'media server' is wired into my network and physically connected to the hi-fi and TV. It actually looks more like a CD/DVD player than a PC. Wireless is only for my laptop which I use to remote control the other PC's.
If I've understood correctly, then I'm not sure why jdejong1 suggests both a wireless router and an access point. I would have thought the wireless router would be enough to provide wireless access on your network. Then either built-in, PCI or PCMIA wireless cards/capability in your devices to connect onto the network. If the router has built-in ADSL/dial up capability as well, then you can use it for sharing your internet connection as well. Built-in firewall is a must.
I agree with 802.11g (although haven't used it myself), as it gives you both network speed and a reasonable range for your network. Although 802.11b is sufficient to stream music [not video really]. The point is that you need to make sure that all your devices will work on the same wireless standard a, b or g. Finally it's important to check that they all support the same WEP [encryption] standard. Typically this is something like 64 or 128 bit. Enabling WEP will add some security to your wireless network, and hopefully stop anyone parked outside from getting onto you network!
OK... I understand. As I said, I don't know about RoomLink. Just had a quick look on the internet for a RoomLink review and found this.
$200 ! Is it any good?
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