Welcome to the computer hope forums harry678.
Your question is very vague and a little confusing. So you have just bought a new laptop with wireless capabilities, you asked you ISP (Internet Service Provider) to provide you with a new wireless modem/router. You bought something similar to this to plug the router into the PC via USB:
However you had problems installing the drivers and/or software so you want to get another router (USB & LAN) so that you can link the two together to connect the PC? This seems a little bizare, there are probably other alternatives but first we need to know a few things and confirm other things.
First and foremost: What computer do you have?
Am I right in assuming that the PC doesn't have an Ethernet port?
Do you still have the USB to LAN adapter? If so what were the steps up to the problem with the software? i.e. installation disc would not autoplay.