formula to copy ocurrences...

[pmarques]

I need a formula (or some other tipe of solution)
That Copys ocurrences from columm C to D when the number in A apears (one or more times) in B.
The data copyed (in D) should be in the same line that the number apears in B.
The example (attached) should Help
I have tried something like
=IF(COUNTIF($A$2:$A$10;B2) >=1;C2;"") but doesn't works

Note : One of the problems (i think) is that A and B are different in size...
Thanks in advanced