Transact-SQL Help

I have 3 tables in SQL 2005. I have dumbed them down significantly, to illustrate my question.

1) Item Table - Contains a list of 2 items, "Coca-Cola" and "Pepsi-Cola".
2) Market Share - Contains the 'market share' information for the items in "Item Table". 1 to 1 relationship.
3) Retail Price - Contains the 'average retail' price data for the items in "Item Table". 1 to 1 relationship.

All three tables are linked by "iItemID".

I am trying to build a simply query that generates the following results:

----------------------------------------------------------
Item Name Market Share Retail Price
-----------------------------------------------------------
Coca-Cola mm.mm% $xx.xx
Pepsi-Cola mm.mm% $xx.xx


If, I first focus on retrieving the Market Share data, using the following query, it retrieves what I want.

SELECT tblItems.sItemName, tblMarketShare.sYTD
FROM tblItems INNER JOIN
tblMarketShare ON tblMarketShare.iItemID = tblItems.iItemID

----------------------------------
Item Name Market Share
----------------------------------
Coca-Cola mm.mm%
Pepsi-Cola mm.mm%


However, if I then add the RetailPrice price table (using the following query), I get the following incorrect results.

SELECT tblItems.sItemName, tblMarketShare.sYTD, tblRetailPrice.sYTD
FROM tblItems INNER JOIN
tblMarketShare ON tblMarketShare.iItemID = tblItems.iItemID INNER JOIN
tblRetailPrice ON tblRetailPrice.iItemID = tblItems.iItemID

----------------------------------------------------------
Item Name Market Share Retail Price
-----------------------------------------------------------
Coca-Cola mm.mm% $xx.xx
Pepsi-Cola mm.mm% $xx.xx
Coca-Cola mm.mm% $xx.xx
Pepsi-Cola mm.mm% $xx.xx

Where the first two values for Market Share are repeated again for row 3 and 4.

How do I syntax my SQL statement to return a single data set in the following fashion?
----------------------------------------------------------
Item Name Market Share Retail Price
-----------------------------------------------------------
Coca-Cola mm.mm% $xx.xx
Pepsi-Cola mm.mm% $xx.xx

I know this is simple for someone who write queries all the time. But this is driving me crazy. I have tried various JOINS (LEFT OUTER, RIGHT, etc.), but I am missing something.

Anyone's help greatly appreciated.

Thanks,

Vance