主题：有两个问题请教这里的电脑大虾 -- 潜龙在田

1.我以前只要在我的MyIE地址栏里打上过去上过的网站名称就可以上了,如去www.rockets.com,只要打上rockets就行了。但现在必须要打上Http://rockets.com。www.倒是不用打。如果只打rockets,就会进入那个令人厌恶的3721，如果只打上www.rockets.com就会出现以下message:

Access Blocked - Virus Warning!

You cannot access this site due to following reason:

Your computer was infected by Spyware or Adware Software.

This is dangerous software which disclose your personal

and transferred data and/or display unsolices advertising.

You can use this ADWARE/SPYWARE REMOVAL tools in

order to solve this problem and prevent futurer infection.

You can click Search to look for information on the Internet.

这是什么原因呢？如何改变呢？

2.如何去掉那个讨厌的3721呢？我不知道这个网站是不是合法的，但这东西实在让人讨厌！I mean,我要找信息自然去google或Yahoo,这3721成事不足，出来的东西全是给些烂七八糟的乡镇企业做广告的。我在其他地方也听人抱怨过，难道拿它没办法吗？

本人电脑文盲，肯请大侠们指导。谢了！