your current security settings do not allow you to download from this location

1. Start Internet Explorer
2. Click Tools, and then click Internet Options.
3. In the Internet Options click the Security tab.
4. Click Local intranet, and then click Custom Level.
5. Under Reset Custom Settings, click Medium in the Reset to list.
6. Click OK two times.

same above settings to Internet Security tab.

Block automatic updates from IE6 to IE7

1. Start regedit.exe

2. Create the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Setup\7.0

3. Click the Edit menu and select New and then DWORD value.

4. Name this new DWORD: DoNotAllowIE70

5. Set the value of this DWORD to a value of 1.

You can also download Microsoft's IE7 Blocker Toolkit as another option.