There seems to be some confusion over exactly what you are trying to do, JK. First you said you want to update your modem, then you say it's not a modem. From reading that website which you linked to, Sandra has provided all the correct information to update the modem drivers, which is what you requested. The Access runner control panel and Access runner DSL, if it's anything like my own ADSL set up, will be software installations, run from the .exe files you have already mentioned. Assuming your modem is now installed with the correct drivers, you should be able to install the Access runner control panel and Access runner DSL from the .exe files you downloaded, or from the original installation CD.
We know PCs can be frustrating at times, but please don't take it out on us if things don't go right first time. Remember, we are trying to help you, but we are not sitting in front of your PC, and can only work on the given information.