Converting rows to columns using t-sql

Hi All,

I have a table with 3 columns, let say ID1 , ID2, Flag

My Source data looks like this..

ID1    ID2       Flag
1         1            0
1         2            0
1         3            0
2         7            0
2         8            1
2         9            0
4         5            0

Now My output should look like this..

ID1     Newcol1     NewFlag1     Newcol2     NewFlag2   Newcol3    NewFlag3
1           1                    0                   2                   0                3                 0
2           7                    0                   8                   1                9                 0
4           5                    0                   null               null            null              null

Basically I want to convert rows to columns and to get above output I need t-SQL query.

Thanks in advance
RH

sql