how to install Nokia 5800 theme with a laptop/mac. usually the Nokia 5800 theme file is .SIS format.sometimes the download files are .zip format. before installing themes, you should unpacked it on you laptop/mac. then you can transfer these themes to your nokia 5800’s memory card via USB cable. after transfering theme files, press the white menu button > tap Applications > tap File Manager > tap “E: Memory Card” > choose the theme you want to install and double chick it, then it will install it quickly. …

How to change Nokia 5800 XpressMusic themes.if you want to customize your Nokia 5800 theme, you should download and install the themes to replace the original. then you can change Nokia 5800 theme settings easily. From 5800 main screen, press the white menu button > tap Settings > tap Personal > tap Themes > tap General > choose the theme you want to set and double chick to select theme.