[Hector's House]

I've got my linksys wireless router attached via cable to my pc (xp pro) downstairs and via wireless usb adaptor to my pc (98se still not had the courage to overwrite it with 2k) upstairs working fine, mainly due to the advice from the people on this forum.
However what I want to do is connect the pc downstairs via a pci wireless card. From the quick start guide it looks as easy as plugging the card in and running the software wizard/drivers.
My questions are:

Is it that easy?

On the pc upstairs the network type is set to "Infrastructure" as it is connected to a wired network, I assume I will have to change this to adhoc is that right?

Can I use the cable I received with the router to connect it to the stb rather than the cable provided by ntl?

thanks in advance