Yes, you should be able to do this from the module code.  See the block_example code at http://api.drupal.org/api/function/block_example_block/6

Note the 'pages' array element (in the example code it is specified as 'node/*').  In your case, you would want to set this to 'admin/build/modules'

Best,
William

On Wed, Jan 27, 2010 at 11:33 AM, ktt <kestutis98@yahoo.com> wrote:
Hello,

Is it possible to define block to show only in module pages?
I would like to define that in module code - is it possible?

Thank you in advance,
Ktt