I have the following fields in table A:

 GL_ID|GL_Name_VC| Amount |Period_TI|Year_SI|
================================================== =
  1000| Sales | -20,000.00 | 01 | 2005
================================================== =
  1000| Sales | -10,000.00 | 02 | 2005
================================================== =
  1001| Cost | 5,000.00 | 01 | 2005
================================================== =
  1001| Cost | 5,000.00 | 02 | 2005

the fields above have the following datatype:

 Fields | Datatype
 ===================================
 GL_ID | Integer
 GL_Name_VC | Variable Character
 Amount | Integer
 Period_TI | TinyInteger
 Year_SI | SmallInteger

The above database is running on Microsoft SQL Server 2000 and i would like to query
for a report that looks something as below:

Description | Period 01 | Period 02 | Year to Date
================================================== =======
Sales | 20,000.00 | 10,000.00 | 30,000.00
Total Sales | 20,000.00 | 10,000.00 | 30,000.00

Cost | 5,000.00 | 5,000.00 | 10,000.00
Total Cost | 5,000.00 | 5,000.00 | 10,000.00
================================================== =======
Profit | 15,000.00 | 5,000.00 | 20,000.00

The above report would list 4 columns, with the last column being a calculated field as a sum of
Period01 + Period02 Amount, sorted by GL_ID and group under a summation row called
Total Sales & Total Cost.There would be a net amount appearing as Profit (Total Sales-Total Cost).

Guys, hope someone out there can help me with the sql command for the above report?