SQL Query problem in fetching data from cross DataBase using where condition

See more:

SQL-Server-2005

SQL-Server

Hello every one ,
I am having problem in fetching data data from another Data base .
I am having 2 data base

1.BankingDB
2.MarketingDB

in this 2 DB i am having a same table MembersTB
i.e in banking i am having table MembersTB an also i am having table MembersTB in MarketingDB also with same column names .

Now i need to display the members record from StartDate to EndDate from both DataBase . I need to append both table from so i am writing query in banking table . For banking table select query is not a problem but i am facing problem in fetching data form another DB(MarketingDB).

Banking Query (Good)

SELECT    MemberShipTB.AppNo,  MemberShipTB.MemberID, MemberShipTB.Name, MemberShipTB.ReceiptNo,				((MemberShareTb.ShareAmt*MemberShareTb.No_of_Shares)+MemberShareTb.AdminAmt+MemberShareTb.EntranceAmt),MemberShipTB.DOJ		         	FROM AmulyaBankingMarket.dbo. MemberShipTB INNER JOIN AmulyaBankingMarket.dbo.
                 MemberShareTb ON AmulyaBankingMarket.dbo. MemberShipTB.MemberID = AmulyaBankingMarket.dbo.MemberShareTb.MemberID where   MemberShipTB.DOJ between '12/1/2012 12:00:00 am' and '2/19/2013 11:59:59 pm' 

since I need to fetch data from another table I need to write in this format

  declare @QueryExecution varchar(1000),@CrossDBname varchar(500),@StartDate Datetime,@EndDate datetime 


   set @StartDate='12/1/2012 12:00:00 am' 
  set @EndDate='2/19/2013 11:59:59 pm'


declare @QueryExecution varchar(500),@CrossDBname varchar(40)
   execute @CrossDBname='MarketingDB.dbo.'


set @QueryExecution= 'SELECT    MemberShipTB.AppNo,  MemberShipTB.MemberID, MemberShipTB.Name, MemberShipTB.ReceiptNo,((MemberShareTb.ShareAmt*MemberShareTb.No_of_Shares)+MemberShareTb.AdminAmt+MemberShareTb.EntranceAmt),MemberShipTB.DOJ       			FROM '+@CrossDBname+' MemberShipTB INNER JOIN '+@CrossDBname+'							 MemberShareTb ON '+@CrossDBname+' MemberShipTB.MemberID = '+@CrossDBname+'MemberShareTb.MemberID where (MemberShipTB.DOJ between '+@startDate+' and '+  @endDate+')'				
 execute(@QueryExecution)

Here i am specifying DB name in order to fetch data from other DB .

But it is showing error like this
"Msg 241, Level 16, State 1, Line 10
Conversion failed when converting date and/or time from character string."

here MemberShipTB.DOJ is a DateTime column in Table .
so i thing the @startDate and @endDate is been treated as string than DateTime so can anyone suggest for this problem.

Thanks in Advance