Could Anybody Tell Me How To Convert Vertical Data Into Horizontal Data?

Could anybody tell me how to convert vertical data into horizontal data?I have a one-to-many relationship in sql server 2KProduct, ProductAccessory, one Product has many ProductAccessories.My Table design is like this:Table Product{   ProdId int,   ProdNameId int,   ....}Table ProductAccessory{   ProdId int,   AccNameId int,   AccUnitId int,   ....}Because one Production has at most 4 ProductAccessoryI want to use a SELECT statement OR function to return ProdId, ProdNameId, AccNameId1, AccUnitId1, AccNameId2, AccUnitId2, AccNameId3, AccUnitId3, ....Any help will be appreciated! Thanks a lotJoseph