HIDING COLUMNS ISSUE

Hi Gurus, Experts, Friends,
i need help from you in this scenario.
we have a "4 dayprocess" where it will be done every month and by this we get ESTIMATE values for the very next month what we run up to. The values what we actually get in the particular month are considered as FINAL.
There are so many companies in my report which needs their "Final and Estimate" values for every month.so if we run the report from JAN2012 to DEC2012, then the report should give the columns with data called FINAL--upto JULY and ESTIMATE for AUGUST.
But when I run my report I am getting Final and Estimate columns for every month.so, we are getting the Final for that month and Estimate for next month.It is following the same way all hte way down to JULY.
The User wants only to see only the FINALS for the past months and ESTIMATES for the upcoming month and not any other columns.
so the report, when run from JAN2012 to DEC 2012, should give output such that, give only columns with heading FINALS upto JULY and column with heading ESTIMATE for AUGUST.
Thses are dynamic columns and I am using PIVOT TABLE for this report.
Please let me know, if anybody want any other info regarding this scenario.
Thanks in advance.

- <ROW>
<BEGIN_MONTH>Jan 2012</BEGIN_MONTH>
<END_MONTH>Jul 2012</END_MONTH>
<FUND_CLASS_ID>4000282</FUND_CLASS_ID>
<FINAL_MONTH_BEGIN_DATE>2012-05-01T00:00:00.000-05:00</FINAL_MONTH_BEGIN_DATE>
<EST_MONTH_BEGIN_DATE>2012-06-01T00:00:00.000-05:00</EST_MONTH_BEGIN_DATE>
<FUND_CLASS>MARF-MC</FUND_CLASS>
<FUND_TYPE>Offshore</FUND_TYPE>
<FUND_NAME>MARF-MC (Net)</FUND_NAME>
<FINAL_ROR>-9.3827556521739130434782608695652173913E-03</FINAL_ROR>
<EST_ROR>0</EST_ROR>
</ROW>
- <ROW>
<BEGIN_MONTH>Jan 2012</BEGIN_MONTH>
<END_MONTH>Jul 2012</END_MONTH>
<FUND_CLASS_ID>4000282</FUND_CLASS_ID>
<FINAL_MONTH_BEGIN_DATE>2012-06-01T00:00:00.000-05:00</FINAL_MONTH_BEGIN_DATE>
<EST_MONTH_BEGIN_DATE>2012-07-01T00:00:00.000-05:00</EST_MONTH_BEGIN_DATE>
<FUND_CLASS>MARF-MC</FUND_CLASS>
<FUND_TYPE>Offshore</FUND_TYPE>
<FUND_NAME>MARF-MC (Net)</FUND_NAME>
<FINAL_ROR>-6.229377421866718423710653529288231713E-03</FINAL_ROR>
<EST_ROR>0</EST_ROR>
</ROW>
- <ROW>
<BEGIN_MONTH>Jan 2012</BEGIN_MONTH>
<END_MONTH>Jul 2012</END_MONTH>
<FUND_CLASS_ID>4000283</FUND_CLASS_ID>
<FINAL_MONTH_BEGIN_DATE>2012-06-01T00:00:00.000-05:00</FINAL_MONTH_BEGIN_DATE>
<EST_MONTH_BEGIN_DATE>2012-07-01T00:00:00.000-05:00</EST_MONTH_BEGIN_DATE>
<FUND_CLASS>MGFII-SLA2</FUND_CLASS>
<FUND_TYPE>Onshore</FUND_TYPE>
<FUND_NAME>MGFII-SLA2 (Gross)</FUND_NAME>
<FINAL_ROR>0</FINAL_ROR>
<EST_ROR>0</EST_ROR>
</ROW>
- <ROW>
<BEGIN_MONTH>Jan 2012</BEGIN_MONTH>
<END_MONTH>Jul 2012</END_MONTH>
<FUND_CLASS_ID>4000283</FUND_CLASS_ID>
<FINAL_MONTH_BEGIN_DATE>2012-06-01T00:00:00.000-05:00</FINAL_MONTH_BEGIN_DATE>
<EST_MONTH_BEGIN_DATE>2012-07-01T00:00:00.000-05:00</EST_MONTH_BEGIN_DATE>
<FUND_CLASS>MGFII-SLA2</FUND_CLASS>
<FUND_TYPE>Onshore</FUND_TYPE>
<FUND_NAME>MGFII-SLA2 (Net)</FUND_NAME>
<FINAL_ROR>0</FINAL_ROR>
<EST_ROR>0</EST_ROR>
</ROW>
</ROWSET>

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