Getting stuck while creating Custom Reports using RTC 3.0.1.2 and BIRT

Hi,

I am trying to create a report using RTC 3.0.1.2 and BIRT. I need to display -
1. Number of high priority defects
2. Number of outstanding defects
3. Number of defects closed
4. Defects related to environment
5. Defects because of design

I tried using Computed variables and filters (to select only defect) but I am still unable to get the above. Please advise on what is the best way to get this information and how can I get these values. Looking forward for you response.

Also, is there any way to fetch data in RTC reports from RQM. Please advise.

Thanks in Advance...
Regards
SUBRIT