TFTP32 + PXELINUX + WinPE x86&x64

[necrosis]

When I PXE boot WinPE the bootmgr.exe file has to be in the root of the TFTP server to load correctly. My problem is when I go to setup another option to boot x64 do I have to load a x64 version of the bootmgr.exe? Or will this program work for both versions? If not, how to I get it so that the startup process looks in the /boot folder (or whatever I happen to call the folder) for bootmgr.exe?

Also another side question:

Does the TEXT HELP option for PXELINUX menus even work in PXELINUX? Or only ISOLINUX or SYSLINUX? I have the LABEL set up like below and it does not display the extra "help" box when the option is highlighted.

LABEL ghostb44
	MENU LABEL Ghost boot with B44 driver
	KERNEL images/memdisk
	APPEND initrd=images/ghostcast_broadcom_440x_10-100.VFD
	TEXT HELP
	Broadcom B44 Network Driver
	Dell: C521
	ENDTEXT