Let me start by saying I feel like and idiot for having to ask this. I have a client with an old dell laptop circa 98-2k. The os is 2k but I don't know if it was an upgrade or not but that isn't important, it is not new. On top of that, there are no USB slots. I am trying to install a wireless card but for some reason it doesn't fit. There's a Zonet modem in one of the slots that works fine. Did I miss something over the years? I've tried a Linksys, a Dlink and a Belkin card but they go in to the same point, about 1/4-1/2 inch away from being in the whole way. It looks like there is a difference in the grooves on the cards. I don't know what to do next and don't know what my options are. Any suggestions would be greatly appreciated. Thanks in advance.