I need electronic copy of few pages of finnish magazines. Could you advise me library which can provide this service for me. Thank you in advance,

Unfortunately we do not have magazines in electronic format. However, you can check the following web address to see whether the magazines you are looking for are available in any of the Helsinki City libraries: http://libpress.lib.hel.fi/search/index.asp?kieli=englanti
In case you find the magazine you are looking for, you can visit the library in question and photocopy the pages you are interested in.
In case you are living in another country, you should contact your local library and ask if they can make an interlibrary request for the articles you are looking for.