If I build an LMCE box, I will have to connect it to my network via a Wireless Nic. My router has a speed of 54MB while wireless (I havent tried it before though)
If I get a 54MB wireless nic, will that be fast enough to watch movies that are stored on my main computer on a windows shared drive?
Well I have not tried that exact configuration but my home lmce box has a Linksys Wifi router/AP and I regulary use my Laptop booted into Windows XP or Kubuntu 7.04 to watch both live TV and recorded TV at standard PAL quality over a 54g wifi connection. This works fin with only the very occasional dropout. However as ever with Wifi your mileage, interms of dropouts etc, may vary dependent on your location.
Good luck.
Andrew