My kingdom for an answer! (PHP coding)

[alwaysinit]

Hi, I have a couple of questions listed at the bottom, but felt they needed a lil' background infoHence, the novel)
I'm building a musician community. I joined, went and got my email verification, loged in, changed my photo and info,logged out. Joined as my wife, and did all the same for her profile.

The trouble is that I have a button "Your Profile" on homepage, and this is all I know to give to let members see their profile info.

Now when it comes time to build my search script I'm screwed because I cannot figure out how to use "mkdir" in the script that signs my members up. Upon member sign-up I know I have to do something with "mkdir" to give them an area of their own. And I know I have to use a unique field in the database to assign member to their area.(was thinkin' bout using "userid",<---good? or bad idea?)

But that's about it, that is all I know to do and have no idea how to code that bunch of mess and not many other folks do either. I've been asking in various forums for one week now. So now I come here to try.
Questions:
(1) Is it possible for me to put my 'user sign_up' script here, and have someone show me how to code the "MKDIR" function into it where it does what I need?(make folder in directory for user)

(2) Is it a good idea for me to use the "userid" field as my unique for "mkdir"?

Basically my goal is to search profiles, find the two dummies I created then click either thumbnail and it would take me to their profile to view. But in order to make that possible I need different folders for different members.("MKDIR") I don't know how to code the "MKDIR" for my script or where to put it in the 'Sign_up' .php

I will owe whomever helps me a great deal because this last thing is all I need to figure out in order to finish the project by myself. Instead of paying someone $3000-$5000 to build my site.
Thanks a million ~Adam

[O~Snapple]

Dont use the Userid field unless that is the field that defines what their folder name is, because it will all get crazy if 2 people try to have the same folder/directort name.

As for question 2, i would suggest finding a php script and modifying it to suit your needs, PHP is open source take advantage of it.

If you feel better creating your own script, you can still look at others scripts to see what else works and new ideas.

~Snapple