Policy relevance: The findings of the study can effect the ARI management policy. If the current study proves that three day amoxycillin is clinically as effective as five day co-trimoxazole and with the well documented evidence of rising resistance to co-trimoxazole, short course amoxycillin may become the first line treatment for non-severe pneumonia Time line: 18 months. Pilot in March 2003, enrollments from April 2003, Interim analysis Nov. 2003, DMC meet Dec. 2003, Data cleaning June 2004, DMC meet July 2004, Manuscript writing Aug.2004.