Post this in home decorating forum. You will get more response.

Look into Shoji screens like this one, then you can take them if you move....

http://www.amazon.com/Legacy-Decor-Natural-Divider-Screen/dp/B000XMJ1X2

The Home Decorating forum would be a big help. Also check out Apartment Therapy:

http://www.apartmenttherapy.com/

I thought I am the only one who has this problem. LOL. anyway, I have transferred our computers in the bedroom to give more space to the living room since we have lots of friends coming over, so we really have to make the living room spacious and not too crowded.

Do you use a wireless network? Makes moving things around a lot easier, I must say. Our fiber-optic broadband ATT wireless is faster than our old physical-line service.

Is he using a large laptop, an all-in-one, or the old hardcase (tower or desktop) with separate monitor, keyboard, and mouse? Assume you have a wireless printer networked up?

My DH uses both a desktop unit w/large monitor, an 18-inch laptop, and a tablet. He's moving the desktop into another room, which will remove the mess of cables and cords. Laptop will be used now with one of the sturdier models laptop stations, a heavy-duty "C" stand that tilts and rolls.

If you must have the desktop/tower + monitor in the LR, I'd suggest going down to the smallest rectangular work desk possible, possibly student-sized. Something like this, which is only 22" deep x 42" long - has a keyboard tray and the lower shelf can hold the CPU and/or printer. With the little mini-hutch on top, even a big flat-screen monitor will fit and the cubbyholes will take care of the misc office supplies that inevitably accumulate around one's workstation:

http://www.overstock.com/Home-Garden/Furniture-of-America-Traditional-Multi-Storage-Pull-Out-Secretary-Writing-Desk/8839018/product.html

Does he need a place to lay out paperwork? Get one of these - rare to find a 5-star rating on a folding table, and this one is also extra long. Great when you need to lay out a buffet of drinks and snacks, too:

http://solutions.blair.com/p/folding-buffet-table/92602.uts?is=Y&store=14&count=500&intl=n&q=table&keyword=table

A good chair that glides easily and can be turned around to serve as extra seating, is essential. People think we're weird for using standard office chairs with casters as DR chairs, until they come to dinner and find that sitting for a couple of hours at our table is actually -- wow, comfortable!

HTH!

Edited to add: Are you allowed to make holes in the wall? If so, we can personally recommend the Sanus wall-mount, sold at Best Buy, Amazon, or directly from the Sanus website. We just had our 50" Samsung wall-mounted 3 wks ago by a contractor, and now we're kicking ourselves for not doing it sooner! Getting it "off the floor" makes a HUGE difference in the room. This isn't the best photo of it, on the RH side, but the flooring is still being finished so we can't get into the room for a few days.

Underneath the TV are three stock white laminate shelves on a simple wall standard system with adjustable brackets. The top shelf is 12" and holds the DVR/cable box and DVD. The bottom two shelves are both 10" shelves, but the middle set of brackets is held on 12" standards. This allows us to move the middle shelf forward where - eventually, when we get back into the room! - we can coil up and better hide all the wires for the other components.

The Sanus does NOT move the arm up and down. It pulls out a full 2', swings from side to side, tilts up/down. We have it in the middle of the room so this allows the TV to be seen wherever we're working (this is our master bedrm, but DH has his office in it so we have a similar issue to yours).