http://www.bootdisk.com/bootdisk.htm
If gaming is your goal I would advise "Windows 98 SE Custom, No Ramdrive"
It's FAT32 compatible (I will assume WinME HD is FAT32, usually is) and with some minor tweaks you'll have enough free base memory for most dosgames.
Of course you will have to edit config.sys/autoexec.bat to get sound in dos.
Problems I foresee: sound support for Dos. Desktops/laptops made for WinME had something called 'SB support' or similar, had to be enabled in the BIOS menu, but that 'SB support' was poor, bare and minimal..... and WinME didn't like it enabled, great chances it will screw up sound in WinME itself.
... and some mores stuffs .... blah blah.
Bottom line: a WinME laptop is far from ideal to run dosgames.