how do i access my root folders, through my php script?

[Jammmer]

i have this include function in a file inside another folder called ajax, but it wnt let me access this include file:\[code\]include("includes/connect.php");\[/code\]i dont know what to do, thanks, and im using localhost?\[code\]Warning: include(includes/connect.php) [function.include]: failed to open stream: No such file or directory in C:\xampp\htdocs\final\ajax\moreProfileUpdates.php on line 2\[/code\]