State-controlled Telecom Finland yesterday gave Microsoft Corp a big boost in its browser battle with Netscape Communications Corp by saying that it wants to get all Finns to use the Internet, and is promoting Internet Explorer version 3.0 as its recommended browser for Windows95 users, though it still recommends Navigator for Windows 3.1 users. The main target is business because the last survey showed almost 400,000 Finns out of a population of 5 million use the Internet every week and almost 150,000 used it daily or almost every day, and they are predominantly fireside users. EuNet Finland Oy is also promoting Explorer. Despite its promotion of the Internet, it is not interested in Network Computers, saying that it doesn’t get involved with hardware.