I am trying to BUILD a computer with some flexibility with BOTH DSL and cable internet connections.  

1) My first question is does a PCI router matter if it is DSL or cable?  I can only find PCI ADSL routers available but I can also find EXTERNAL DSL/cable routers available.  Does this mean if I get a PCI ADSL router, it won't work with cable internet signals from the modem?

2) I can find PCI DSL modems and PCI cable modems as well but I have no luck in finding a combo PCI DSL/cable card.  Do they even exist?All you really need is an Ethernet card.  DSL and Cable both with plug into a standard ethernet card.

As far as a router goes, one with an Ethernet WAN interface (pretty darn standard) will attach to either service.I think it's a Language thing.  In Europe, they call them ADSL routers...in North American, it's DSL modems.  Everyone seems to call them Cable modems.  Of course, technically, neither one are MODEMs (Modulator-Demodulator).  There are very few PCI DSL or Cable modems.  Almost all are external and have ethernet and/or USB connections.  Routers are all ethernet.
These are routers:
http://www.linksys.com/products/group.asp?grid=34&scid=29

http://www.cable-modems.org/articles/linksys_review/  Ethernet cards?

  I tried looking it up on google and all I see are ethernet cards with a single RJ-45 connection?  What I WANT is a cable line that goes directly to a cable modem PCI input card which also has a RJ-45 output to go to a router PCI input that has wireless output to other computers within range.  I also wanted some flexibility between DSL and cable internet so that I can connect a DSL line into a DSL modem PCI input card, etc. etc.  What I wanted to know was if the router in both CASES will accomodate both DSL and cable internet RJ-45 inputs?  Thus I could be using a cable internet service provider using Router "A".  2 years later I switch to a DSL line instead, can I still use Router "A" for the DSL line because it was only specified for use with a cable line?  The links provided are "external" devices, I am looking for a combo cable/DSL modem "PCI" interface but have not found any vendor having this card. Quote

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1.  I tried looking it up on google and all I see are ethernet cards with a single RJ-45 connection?  
2.  What I want is a cable line that goes directly to a cable modem PCI input card which also has a RJ-45 output to go to a router PCI input that has wireless output to other computers within range.  
3.  What I wanted to know was if the router in both cases will accomodate both DSL and cable internet RJ-45 inputs?  
4.  I am looking for a combo cable/DSL modem "PCI" interface but have not found any vendor having this card.