PPP Adapter. in winipcfg

Hello,

My pc is win98se and I have a broadband internet connection.

I have been using the broadband for a few years. And since the beginning of
this year, my internet connection will be intermittently lost. At first, I
thought something was wrong with the modem, which is terayon TA-102. I have
called the ISP to replace it. However, the problem is still there. Then I
tried to get used to it. Whenever I lose the connection, I will need to
reboot my computer to get the connection back (the modem does not need to be
flipped off then on).

I called the technical support again today, and we've looked at the modem
and it didn't appear that my modem was failing to provide a signal for me.
Then I run winipcfg and see that there are 3 entries: PPP Adapter.,
Microsoft TV/Video Connection and Realtek 8139-series PCI NIC. PPP adapter
is for dialup connection and Realtek is the network card for broadband. The
technical support girl said win98se will sometimes switch from the network
card to PPP adapter, although she doesn't know under what circumstances this
will happen. And the problem I've got is because my computer has switched
on its own accord from the network card to PPP adapter.

So are there any ways to force the computer to only use the network card so
that it will always use the network card to get online? Or how can I
uninstall ppp adapter so that the computer can't even choose to switch back
to it?

Thanks.

Herbert