Your computer system concept should work with a Laptop or Desktop. I don't use the HP PC models, but looking up the Internet specs for the models you mention, they should work. But get a good Anti-virus, with firewall, and a good encryption program. Norton is good, but I suggest AVG. In fact, one AVG automatic update just now kicked in, as I'm writing this post. I found that Norton updated only once a week unless I pushed it, and really hogged the system. AVG is constantly updating with being prompted.
WIRELESS ROUTER:
You get what you pay for. Safecom, Linksys ( Nr. 54 G ) and D-Link are fine, and the wireless range is good for a house or apartment. You set the wireless access point or device security with the SSID encryption number + WEP key ( 256 b ) to match each of your devices (This is the first time you log in for each device-One time only manually ) to keep virtual " neighbors " from joining your network and reading your files. They can see your wireless system, but can't log into your system as it is encrypted.
I saw a need for a wireless network when my sons would come over from college with their laptops. My wife or I might be watching TV, Beomedia, or working on the PC already, and installing and connecting a wireless router then allowed us to all go online at the same time. One has a Acer ( XP ) and one has a MacBook Pro ( Apple + XP ), and there is no problem with either being one at the same time using wireless. Both the Acer and the Macbook Pro have Antivirus and Firewall programs installed. ( It's only a matter of time ).
VOIP:
If you are using or will be using VOIP telephone sytems, your wireless router needs to be set-up downstream of the VOIP router.
PRINTERS:
I use 2 printers on my system, which are located upstairs from the Desktop PC connected to the B&O systemand Home Theatre: A true all-in-one ( Fax, scanner, printer, copier ) to a dedicated digital line, and a large graphic - photography printer. Initially I used HP Bluetooth buttons for both, connecting to the Bluetooth button pr key on the PC, and no wires, but the delays etc,. were not giving me the results I needed. The USB 2 (A+B) cables now run alongside the MasterLink cables inside conduit in the walls. You can run the cables bare if you want, but again get good quality cables for long runs.
LOGITECH:
No problems here. I use a logitech D-Novo Edge keyboard and a Microsoft mouse. Both are Bluetooth, and everything works as promised. I do re-set or change the passwords for both weekly, or as needed. The Logitech keyboard looks like it was designed by B&O as it matches our BS 3200, but I leave it on a glass table in the Living Room when I want to work or go online.
Note that there is no conflict or problem with Bang & Olufsen M-L, Television, Beomedia, Beoplayer, or Beoport with anything PC described here. If you are considering Beowireless modules, you might want to run your concept ideas by someone at a B&O store or tech support. There has been some mention of occasional signal interference with wireless telephones in past postings.
You already know that wireless hotspots allow you to talk to your PC at home. If you are connected, your VOIP system can be used this way also. Using a WI-FI VOIP phone, I can make a local call from Europe, Brasil, or North America, etc. which I have been doing for a few years now. You can also connect a VOIP phone to your laptop and use it anywhere in the world too.
I hope this is helpful to you.