I think you are the perfect candidate under the category  4313, so just take a self-assessment Test from the following link, you need to secure 67 points mark. If you have a wife with bachelor's degree you also get 5 points for that. Make sure you take IELTS or TOEFL test for getting as high as possible score under the language category. All the best.

http://www.cic.gc.ca/english/immigrate/skilled/assess/index.asp

Now, there is no preliminary application like filling a 3-page initial application form and wait for thier response and instruction to fill the full application forms and furnishing the requireed documents.

Now you apply with all the documents you have in hand... make sure those documents are notarized from the public notary. In Nepal there are 30 or 35 lawyers who are now eligible to notarized your various documents. You do not have to go to Kitab Byevastha Karyalaya in Babar-Mahal.

It's not going to take 6-7 years for processing the application for PR now. Becsue as per Minister Kenny's annoucement, it will be speed up considerably to do away with the backlog.

So Bad news to guys who are not in the above 38 high-demand occupations, if yo have applied after Feb 27th 2008, your application forms and fees will be returned. SORRY about that.