A question about the SUMIF worksheet function.

Hi,

I have two columns, A and B respectively, that contain the following values:

4    "E1-2"
1    "V2A-1"
1    "Vm5-5"
2    "E1-2"
3    "E1-3"
1    "E4-11"

How can I write the SUMIF worksheet function to search for everything in column B that contains the letter "E" and if it contains that letter, it will sum the value in column A?

Thanks...

Mike