Wireless Adapter in Wins 98se ailed

Hi
I an asking for help for my son who has been having problems
with this USB adapter to get it to work on an older computer.
The OS is windows 98se. The USB port on this computer is 1.0.

This D-Link DWL G122 Rev B USB adapter installed on the 98se computer
was networking with a D-Link Di- 624 router that is connected to
a dsl modem, to a OS XP computer.

This adapter worked fairly well for about 3-5 days.
However during this time the adapter did fail but with several reboots,
reinstallments manage to get it to work again before it stopped
working all together. Lights do show then stop & the icon in tray
disappears.

D-Link tech support was totally useless. No solution at all.
They did suggest we download new drivers from their web site for the 98se &
that did not take care of the problem. This adapter still will not work.
Icon on desk top will not open up either.
Another call to tech support with this latest problem, they suggested they
download this software to my son's XP computer.
Doing so an icon 'D' does appear in the tray.
Since it did, the tech support said the software is fine & it appears to be
working.
Tech support claims something is wrong with the computer with 98se to cause
the
adapter & the software to stop working in it.
They ask the tech person if there is a solution for this or a way
to find out what could have caused this, they had no answer.
I've been told there were no error messages or any type of warnings that
gave them any indication anything happened during the installment or during
the
time it did work.

We basically know very little about computers, specially when something goes
wrong. Our concern is if there is a problem with this 98se computer which
worked
fine before this adapter was added, purchasing another adapter will they run
into the
same problem?

On the CD that came with this adapter the driver version is 2.0
In the manual it claims to work with various OS including Wins 98
Then after they downloaded the new 98se driver from D-Link's web site for
this
adapter, Device Manager has Ver: 4.10.2222 Dated: 7/9/2004 Copyright:
1988-1999

Either way if the problem is within the 98se not the adapter what steps can
we take
to determine & to correct it? Before trying this setup the 98se computer
was connected
through a dial up connection & never gave them any problems, other than
being very slow.

Sorry for the long detail letter but this is the only way I know how to
explain this problem. We do not know enough about computers & find this
latest to be
very confusing, not to mention how frustrating when not even the product's
tech support
can offer any type of help.
Please, your help is greatly appreciated & much needed.
Thank you!

Diane