Which are the high ranking directories through which i can get ranked at top number positions in search engines in short period of time.
There are a lot of directory lists on the web. Here's a list of high PR directories. You can use the search on the site to narrow the list to your specific criteria.
for free directories, here's a list http://www.web-directories.ws/General/Free/ and for paid directories http://www.web-directories.ws/General/Paid___Reciprocal/ another list is here http://www.addurl.nu/
Here's the link http://www.google.com/dirhp make sure to get site wide this way you are a sure to high rank in no time Good luck! we're pulling for you
Ignore pr, check search results for your keywords and similar keywords and see if some web directories show up.
there are lot of free high rank directories available on web.mostly free of cost and some directories paid. http://www.whenweseo.com/web_directories/high_pagerank_directories.jsp