if u want to invest Rs.3000/-p.m. first u select the scheme in which u wish to invest. Instead of investing on some ( 1 or 2) standard day in a month, wait for the market to fall. In case the market falls like today (28.2.2007), where the fall was about 500 points, the NAV of all the schemes on 1.3.2007 will be lesser. so u can invest tommorrow to get maximum advantage. Similarly, every month, whenever market fall by 100 or 200 points on a single day, i think, the next day will be the best day to invest