Okay, I'm going to try to reply to this message for a third time -- last two replies were lost when I tried to backspace (attention TechSoup -- you've got a bug in this new system!).
It's a great idea to recruit members for an advisory team to help you with the planning and development of web 2.0. *However*, you might want to concentrate on social media and communications experts, rather than IT experts. You want to recruit people who know how to put web 2.0 tools to use, to achieve tangible results for a nonprofit organization. The IT experts can set up systems, but they aren't necessarily the best people to tell you how to use them. (my analogy: I don't seek out car designers when planning a road trip).
First: what do you mean by Web 2.0? You need to define this explicitly, because there is no one definition everyone agrees with.
Next, look within your organization for expertise you may already have. Ask your current staff (both paid and volunteer) if they have experience with instant messaging, live online video, live online slide presentations, blogging, recorded video (either finding and watching such or producing such), recorded audio/podcasts (either finding and watching such or producing such), participating or moderating online discussion groups, or using online social networking (MySpace, FaceBook, etc.) or online professional networking (LinkedIn, etc.). This experience can be as part of their work with your organization OR as part of their activities outside their association with your organization (should they be willing to share such). Do your survey informally, one-on-one with staff that come on site regularly, and via email or a paper survey with staff (including volunteers) that don't come on site regularly. This survey will help you identify paid staff and volunteers who should participate in this committee (and remember that it may turn out that your receptionist has more Web 2.0 experience than your marketing manager).
How long do you want this committee to exist? A month? Three-months? Six months?
What would success for this committee look like at the end of a month? At the end of three months? At the end of six months? (you can define this now, and invite the committee to refine it once they begin meeting)
How often do you want the committee members to meet onsite?
How often do you want the committee members to meet online?
Who will be the staff person in charge of facilitating this committee, recording their advice, etc.?
For committee members who aren't already staff or volunteers with your organization, you will want people who have a lot of experience using Web 2.0 (the tools that you have surveyed staff about). You will also want people who can talk in non-technical terms. More advice regarding crafting your recruitment message here.
Once you take all these steps, you will be able to write the committee description yourself, tailored to your unique situation.
To recruit other members of your committee, invite your current volunteers (including the board!) to let their family, friends and work colleagues know about the opportunity. If you are in the USA, you can use VolunteerMatch to recruit more volunteer committee members. No matter where you are, you can use CraigsList and Idealist as well.
I hope you will post again later, to talk about how your committee recruitment is going, or how the committee ultimately turned out. If you want to post your committee description here for comment, feel free to do so.