Unzip to a temp folder... remember where. When nic is detected by system, click "have disk", point to this folder. Or you can manually install by clicking ADD NEW HARDWARE, then select Network Adapters, then select have disk, point to same folder.
The following files are found inside the driver download file.
|netr8180.cat||2 bytes||17 Aug 2000|
|NETR8180.INF||14.4 KB||29 Apr 2003|
|rtl8180.sys||152.2 KB||29 Apr 2003|