Where can I connect a all in 1 usb 2.0 card reader

If it is an internal solution, using the directions provided by your motherboard manual (linked here in case you no longer have the physical copy: http://support.asus.com/download/download.aspx?modelname=P4P800&SLanguage=en-us 'user's guide english' at the very bottom [select winxp as operating system if you're prompted for it, open the manuals tree and navigate to the bottom of the list])

Check for the on-board USB2.0 pin-headers. You should be able to connect it to one of those.

Alternatively, if you want to just try and connect them directly, you should find the same pins in two sets of 7 pins in total near the bottom of your motherboard, labeled as 'E_USB1' and 'E_USB2' or similar.

Note that if the connector you're trying to place on there does not fit initially, then it may not be compatible. Do *not* try to force it or jury-rig it unless you are entirely sure of what you are doing, as you may damage the USB controller(s) and/or the entire motherboard in the process.