thanks, ill give it a try
for everyone who has a adword google account, google has a program that does just this call the the google traffic estimator
if you have a adword account and you want to check it out, heres how you get in
To access the standalone Traffic Estimator tool through the Tools page in your account:
1. Log in to your AdWords account at adwords.google.com.
2. Click the Tools link on the Campaign Management tab.
3. Click Traffic Estimator.
4. Enter keywords: In the field provided, enter your keywords so that each word/phrase appears on its own line.
5. Choose a currency: Select your currency, then enter a specific CPC bid for your estimates, or let us suggest a value. Our suggested value should deliver ads in the top position 85% of the time. If you feel you don't need your ad in the top position 85% of the time, you can reduce the CPC bid.
6. Choose your target languages: Select which languages you'd like to target.
7. Select Location Targeting (countries, regions and cities, customized)
8. Choose one or more target countries: Select which country you'd like to target.
9. Select if you want the estimates provided to be customized based on your account history.
10. Click Continue to see your estimates.
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Search Engine Tool? 
