IIS WPG permissions question and eaccelerator question

[Hitman3266]

what permissions should the IIS_WPG user have

as of right now i have
[i25.tinypic.com...]

for EVERY PUBLIC folder, i also noticed that removing the IIS_WPG user the site continues to run, the site is 100% php and mysql dependent

its running on windows server 2003, with IIS 6.0, php, and eaccelerator, so my question is basically what is IIS_WPG, and is having that configuration (as in the picture) for EVERY public folder correct?

also my eaccelerator TMP file has these permissions [i31.tinypic.com...] eaccelerator is working properly and is able to read and write to this folder, but im wondering do i need to add IIS_WPG with full write permissions or IUSR_SERVER to this TMP folder where eaccelerator writes to, how and under what account does eaccelerator write under, that second picture is the current permissions, it is able to write and read properly, im just wondering what its doing it under, system?

thanks

[mattur]

The IIS_WPG user group is new in IIS 6.0. It provides the minimum set of privileges and permissions required to start and run a worker process on a Web server. On a clean installation of IIS 6.0, the IIS_WPG group contains the Network Service, Local Service, LocalSystem, and IWAM_ComputerName accounts.

Configuring Application Pool Identity in IIS 6.0 (IIS 6.0) [microsoft.com]

Default permissions and user rights for IIS 6.0 [support.microsoft.com] may also be useful.

For eAccelerator permissions your best bet is probably to post to their mailing list. HTH