I am making Cliffhangers (Price Is Right yodely guy game), and using velocity to make him climb. I used this but I realized this is for the whole model. How do I cahnge this for ONE part?
game.Workspace:GetChildren(parts)
for i,v in pairs do
if i.ClassName == "Part" then
i.Anchored = true
end
--mouseclick thing goes here

4 comments
Your syntax is a bit off.
If you're good enough at scripting to use for loops and if statements, then you should know enough to make this for a single part. And yes, you have some errors in there. Nothing the output can't help you with though.
I'm assuming you don't know how to script due to the fact you can't edit this for one part.
Might I ask what this has to do with "velocity", as specified in the post? Also, you should know this is searching the Workspace, not just a model. ( http://wiki.roblox.com/index.php?title=Absolute_beginner%27s_guide_to_scripting )