$150 shouldn't be too difficult. Best way to raise money is just to ask.

When I did an autism fundraiser a few years ago I set what I thought was an aggressive goal of $250 in personal fundraising for the event. Within two weeks I had raised over $1,000. I only sent the request to family and a few close friends, but they ended up sending it on to more people, and that's what brought in the funding.

Make your request personal (that is, tell people why this cause is important to you) but remember that you aren't asking your friends to give money to YOU--you're asking them to support an organization that is worthy of support, so there's no reason to be hesitant or apologetic about it. What I found was that people really wanted to help out and felt good about making their donations.

Good luck!

Sarah