Install Open Office and other apps on SD card

Buy a fast SD HD card (like SanDisk ultra II), plug it in your aspire one expansion slot and format it.

Download Portable Apps (HERE) Platform only, run it and select your SD card drive.

After installing go here and download the applications that you need, just run the files and install them on your SD card.

Now you can create a link on your desktop to portable apps platform ;)