Moving from 10Mbps Ethernet to Wireless 802.11g - HELP!!

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Could someone who knows about these things give me some advice?

My home/office has two desktop PCs (both 3.2GHz Pentium IVs) running
Win98SE. Both have USB2.0. Also, both have PCI Ethernet 10/100 adapter
cards and I am running a peer-to-peer Microsoft Network (i.e., the one
built in to Win98SE).
The internal network wiring is all ancient BNC coax, which means I am
limited to 10Mbps (and why I am not using the LANs built-in to their
motherboards, which have RJ45 connectors). This slow speed is getting to be
a real hassle when doing backups.  Additionally, it is preventing other
sharing work I need to do.
I still connect to the internet using 56K V92 dial-up; half-decent
broadband has only this year become economically available in my neck of
the woods (IMO it is a swindle to market 128Kbps as broadband).  I use
Windows Internet Connection Sharing (ICS) so both machines share one dialup
modem (3com USR, serial connection).
Changing to RJ45 wiring to get 100Mbps is not an option because the BNC
coax wiring is sealed into a solid concrete floor and I don't want trailing
I have Win2K CDs, SP4 and licenses to cover these PCs but have held off
from upgrading from Win98SE because "if it ain't broken, don't fix it". A
very wise dictum indeed when M$ software is concerned, I'm sure many will

Yesterday I bought a Toshiba Satellite P25 portable PC preloaded with WinXP
Home and SP2. The laptop is fitted with built-in (not via a PCMCIA card)
Atheros AR5001X+ 802.11 a/b/g wireless network hardware. According to:
this has a "108-Mbps Atheros Turbo Mode" too. I realize from some research
that 108 Mbps will in the real world at best be 60-65 Mbps, but that is a
lot better than the 40-45 Mbps which is the best I can hope for from
"standard g".

I want to use the laptop in my network, and this seems a smart time to
upgrade my network capabilities to a wholly wireless LAN as well as my
dialup internet connection to 1Mbps broadband.
Used where they will be, none of the three computers will be more than 30
feet from any other, and there will never be a brick wall between any two
of them (only a wooden partition or floor).
I would like to make use of the "turbo mode" on the Atheros so I can get
better than 50mbps from the new wireless-only network.
What PCI cards should I buy to be able to get the faster networking between
all three? And what hub/router/modem/whatever (makes and models, please)?
(yep, I asked toshiba and atheros
I already know that in order to get the claimed "108 Mbps" I must have
cards from the same manufacturer - but remember, the laptop has the
Atheros-based 802.11g built-in. I don't want to have to add a PCMCIA
network card to it.
Would I be wise to upgrade Win98se on the desktop PCs at the same time?

All help and suggestions gratefully accepted.

Re: Moving from 10Mbps Ethernet to Wireless 802.11g - HELP!!

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AFAIK, moving large files across a wireless network is slow and deadly, A,
B or G.

if you do file transfers often, wired ethernet is the way to go.  in yourp
proposal, it sounds like you will be doing a whole lot of costly upgrades,
but you will not find the speed to be what you desire when you are

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