Question : SQL sub query help needed

I have this query which works fine:
SELECT     tblProject.ID, tblProject.Name, tblProject.PercentComplete, tblProject.StartDate, tblProject.ScheduledEndDate, tblProject.ActualEndDate,
                      tblCompany.Name AS Company, tblProject_Status.Status
FROM         tblProject INNER JOIN
                      tblCompany ON tblProject.fkCompany = tblCompany.ID INNER JOIN
                      tblProject_Status ON tblProject.fkStatus = tblProject_Status.ID
ORDER BY tblProject.ID DESC

What I want is to add a column to the results which shows the date of the most recent entry in the tblProject_Blog table so that I can summarize when the last update was made.  The sub query should go something like this:
SELECT     MAX(DateTime) AS MostRecent
FROM         tblProject_Blog
GROUP BY fkProject

Can someone clue me in on how to "connect" these two queries so that the results from the second show up as a column in the results of the first?  Thanks!

USE [DGI]
GO

/****** Object:  Table [dbo].[tblProject_Blog]    Script Date: 07/26/2010 16:34:11 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

CREATE TABLE [dbo].[tblProject_Blog](
      [ID] [int] IDENTITY(1,1) NOT NULL,
      [fkProject] [int] NULL,
      [fkEmployee] [int] NULL,
      [DateTime] [datetime] NULL,
      [Text] [varchar](max) NULL,
 CONSTRAINT [PK_tblProject_Blog] PRIMARY KEY CLUSTERED
(
      [ID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

ALTER TABLE [dbo].[tblProject_Blog]  WITH CHECK ADD  CONSTRAINT [FK_tblProject_Blog_tblProject] FOREIGN KEY([fkProject])
REFERENCES [dbo].[tblProject] ([ID])
ON DELETE CASCADE
GO

ALTER TABLE [dbo].[tblProject_Blog] CHECK CONSTRAINT [FK_tblProject_Blog_tblProject]
GO



USE [DGI]
GO

/****** Object:  Table [dbo].[tblProject]    Script Date: 07/26/2010 16:34:20 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

CREATE TABLE [dbo].[tblProject](
      [ID] [int] IDENTITY(1,1) NOT NULL,
      [fkCompany] [int] NULL,
      [Name] [varchar](128) NULL,
      [fkStatus] [int] NULL,
      [PercentComplete] [int] NULL,
      [StartDate] [date] NULL,
      [ScheduledEndDate] [date] NULL,
      [ActualEndDate] [date] NULL,
      [ProductBuyPrice] [money] NULL,
      [ProductSellPrice] [money] NULL,
      [ProfessionalServicesBudget] [money] NULL,
 CONSTRAINT [PK_tblProject] PRIMARY KEY CLUSTERED
(
      [ID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

Answer : SQL sub query help needed

i guess you just need to have nested treemap only.
Also Create an element class with 2 attributes: key and value

something like

TreeMap parentTM = new TreeMap();
TreeMap childTM1 = new TreeMap();
TreeMap childTM2 = new TreeMap();
Element elem1 = new Element(key, value);
...
// Put elements to the map
childTM1.put("1", elem1 );
childTM1.put("2", elem2 );

childTM2.put("1", elem1 );
childTM2.put("2", elem2 );

parentTM.put("1", childTM1 );
parentTM.put("2", childTM2 );