OK.
This is all 85Mbps gear, which is fine for most normal uses. If you're looking to stream multiple HDTV streams, you'll need to look at stuff that complies with the homeplug AV standard.
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If you have a point where you want a single RJ45 connected device,
http://www.solwise.co.uk/net-powerline-pla-85-e.htm
An alternative is the Netgear XE103
http://www.ebuyer.com/product/119372
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If you want multiple devices attached to a single plug,
http://www.solwise.co.uk/net-powerline-pla-85-3e.htm (3 port)
Also consider the Netgear XE104, which is 4-port.
http://www.ebuyer.com/product/106825
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For the room you want to use wireless in,
http://www.solwise.co.uk/net-powerline-pl-85pew.htm
You can set these up to act as part of your exisitng wireless network if you have one.
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A combination of the above should be able to achieve what you want. I use a pair of the 3-port solwise units, which I would choose these over option 1 anyway, 3 ports for minimal extra