SQL Union question

I'm working in MS Access 97, and have two tables:

Items
SKU ......... Description
1001 ......... Apples
1002 ......... Bananas
1003 ..........Prunes
1004 ..........Grapes

Sales
SKU .......Quantity .......Date
1001 .........5 ...........1/5/2004
1001 .........3 ...........1/8/2004
1002 ........12 ..........1/4/2004
1002 .........8 ...........1/12/2004
1004 ........11 ..........1/25/2004
1004 ......125 ...........2/6/2004

I'm trying (without success) to write a query which will sum the quantity's sold for a specified month.
However, I'd also like to see a zero value for any item that wasn't sold.
ie: I'd like one row for each item in the Items table.

With the above data, the results for January should be:
SKU ......Description........ Quantity
1001 ......Apples .................8
1002 ......Bananas .............20
1003 ......Prunes .................0
1004 ......Grapes ................11

I've tried both outer joins and unions, but can't get it to work.
Can someone help me?

can u tell me what is the output with outerjoin

Try something like

both queries produce the same result:

SKU ......Description........ Quantity
1001 ......Apples .................8
1002 ......Bananas .............20
1004 ......Grapes ................11


it's missing this line:
1003 ......Prunes .................0

turn the inner Join in Memnoch's example to a Left Join

S-