dear sanjeev,
now it is advisable to go in for iso 9001:2008 version, which has come into effect since mid nov 2008. it would be covering chairman to doorman, except the accounts or finance departments. the chapters would be asking whether you have system in vouge covering all the activities, and it is necessary to say how you are doing these activities in a manual and corresponding flow sheets or procedures. it is simple. there are number of auditing firms, who conduct the certification audits and recommend for certification if found acceptable, without major non conformances. where you are located, if in mumbai i would be in a position to help you out, since we are one of leading consultants for iso and related management systems