What I'll recon is to go for Mozilla Firefox instead
You can download it from below
Download Now
Here is stepwise guide from Microsoft.com
Step 1: Make hidden files and hidden folders visible
a. Click Start, and then click My Documents.
b. On the Tools menu, click Folder Options.
c. Click the View tab.
d. In the Advanced settings list, under Hidden files and folders, click Show hidden files and folders, and then click OK.
Step 2: Uninstall Internet Explorer 7
To uninstall Internet Explorer 7, follow these steps:
a. Click Start, and then click Run.
b. In the Open box, type %windir%\ie7\spuninst\spuninst.exe, and then click OK.
c. Follow the wizard instructions to uninstall Internet Explorer 7.