Getting totals for each customer transaction

First off, thanks for looking at this to see if you can help... I've tried several codes that just aren't working... but then again, i am not a very good programmer...

Here is what I have:
two columns (F &G), In F i have customer numbers and in G I have amounts of money
I would like to get a code that would recognize the similar accounts (which are usually pre-sorted) and put the totally of all amounts in column H (preferably in the row of the first Customer # in the group.

Let me know if anyone can help!

Thanks!

Use a Data > PivotTable to create a chart giving you your summaries.