找了一下資料...果然如樓上大大所說,要把東西裝回去才能復原.
"WebHancer modifies your Windows Sockets configuration, binding itself to Winsock so that all packets are passed through WebHancer, so deleting WebHancer files may result in your loss of ability to connect to the Internet."
大略的翻譯如下:
".........把他自己跟Winsock綁在一起,所有封包都會經過Webhacer傳送,所以直接刪掉Webhancer的檔案會讓你無法連接到網路"

正確的處理步驟在這個網站可以找到

http://www.spyany.com/program/artic..._webHancer.html

重新能夠上網的感覺真好XD