Hi Kirsty,
A quick peek on your Qs history, if i understood correctly, you installed
the IE7?, is that aright?.
If you did, then to get the Google Search back do the following:
1... Click start >> Control Panel >> Double Click Network and Internet
Connections >> Double click Internet Options, on the IE Properties window
you will see these Options:
General | Security | Privacy | Content | Connections | Programs
| Advanced .
Click on General Tab then click on Settings button opposite the search option.
On the Change search defaults if you can see the Google option listed then
you can Highlighted it and click on Set default button. If it isn't there you
can Add it by clicking on the Link (Blue link) titled " Find more
Providers..." and you will find a list of search engine providers one of them
Google and you can install it.
HTH.
nass