Hi Tawfique,
If you have paid your "Right of Permanent Residence Fee" - then it surely guarantees your visa, Congratulations ! I presume you applied from Bangladesh and you will have to submit your passports to the local Canadian Embassy who in turn will forward it to Singapore for the visas to get stamped - this process would take anywhere between 4-8 weeks. So be patient and get ready in the meantime to move to Canada.
All the Best !!
Mike..
Ps. Would you let me know when you applied, your medicals etc and from which country. I applied from Thailand and finished my medicals in October, 2007 - no news yet...