My 6 year old Insprion E1505 that should be fairly similar to what you have. It has WinXP on it but that is nearly useless as it runs extremely slow. What does run really well on it is Linux/Ubuntu. My main tasks with it these days are email, forums, and other light internet use, but I can still watch videos and listen to music from it if that is what I want. At some point I could see putting it in the garage workshop area to allows me to listen to music (without commercials and DJs) and look stuff up on the internet as needed.
Using Ubuntu is really quite easy, just click on the firefox icon and up comes the web browser.