Saga Lout :
The laptop would have to be set to share its Internet connection and the dongle would need to be capable of creating a visible network in the way that an internal wireless adapter does. I'm not too familiar with dongles but I doubt they can do that.
Thanks for the quick reply.
See, after hours of searching, I found this site 'virtualaccesspoint.com'. There I created an access point (SSID+Password), which was amazingly detected by my Samsung mobile (Galaxy Y). But the next problem was that I couldn't connect/browse the internet and my android apps (although I was connected to this created network excellently). And, I think that it may be the IP settings in my laptop and mobile which is the only problem to be solved. Please let me know your suggestions/solutions. Thanks in advance