A little help

[William A. Edwards]

I am trying to get IMP working with IIS, Win2000, and SQL Server.  I
have everything working except this headers problem.  The test.php3
script said that I had everything configured correctly.  Would someone
please tell me what to do with this headers issue?
Thanks,
Allan

Warning: Constant no_action already defined in ./lib/imp.lib on line 23

Warning: Constant send_message already defined in ./lib/imp.lib on line
42

Warning: Constant mailto already defined in ./lib/imp.lib on line 52

Warning: Use of undefined constant LOG_LOCAL4 - assumed 'LOG_LOCAL4' in
./lib/imp.lib on line 631

Warning: Cannot add header information - headers already sent by (output
started at ./lib/imp.lib:23) in
C:/Inetpub/AspireWebsite/webmail/horde/phplib/session.inc on line 407

Warning: Cannot add header information - headers already sent by (output
started at ./lib/imp.lib:23) in
C:/Inetpub/AspireWebsite/webmail/horde/phplib/session.inc on line 120

Warning: Cannot add header information - headers already sent by (output
started at ./lib/imp.lib:23) in
C:/Inetpub/AspireWebsite/webmail/horde/phplib/session.inc on line 416