Not sure if I placed my thread in the right place. If not please move it. Also please be kind with your comments.

I need to get another 52000 United Miles to fly my husband back to Singapore with my son & I.

Newbie question :- We are planning to make some big purchases for the house fairly soon around $9500...I was thinking if we apply for a cc that has some miles that we can earn...which credit card will give me the best miles to get to the 52000 miles that we need? I need to get him a United ticket as my son & I already have our ticket purchased. We are travelling only in Nov 2011.