How do I get the date stamp to show up on the picture DMC Lz2 ? I've already set the clock in the settings menu. But the date and time stamp doesn't show up on the photo taken.

Are you sure the time stamp is visible in the pictures, when you put them on a computer or when you print them?
I only see the time stamp visible in the play back menu.
To change that, you only have to press the display button, when viewing the pictures you took. Don't be afraid to lose the date and time, because it is in every picture, hidden for sight, but always there if you want to see it.
If this is not what you mean, please let me know, I will search more.

Touch MENU to bring up the menu. Select [REC], select [Date Stamp], then select [Off].

See page 83 of the Advanced manual: http://service.us.panasonic.com/OPERMANPDF/DMCFH27_ADV.PDF

Turn on the [Date Stamp] setting in the [Rec] menu. See page 83 of this manual.

There is an option in the settings menu for either Date Stamp or Text Stamp. This is where you enable printing the date on the picture

The date stamp will only work when the camera's resolution is set to postcard mode. Press Func/set, scroll down to the bottom, then across to the icon with the clock and mountain. It will say "postcard". Press Func/set again. Then press Menu, scroll down to "Date stamp" and across to select date or date and time, then press menu again

Press [MENU/SET]. Press up/down to select [CLOCK SET]. Press up and down to set time. Under Appearence set date, time and the display order for the date and time. Press [MENU/SET] to close the menu.

You can read more about this in the user manual, page 19: http://panasonic.com.au/content/library/files/F002107.pdf

The date stamp will only work when the camera's resolution is set to postcard mode. Press Func/set, scroll down to the bottom, then across to the icon with the clock and mountain. It will say "postcard". Press Func/set again. Then press Menu, scroll down to "Date stamp" and across to select date or date and time, then press menu again

Normally in the menu settings the options are entered so as to stamp the date in. So open menu settings and check on clock and date settings. check for links to date stamping in the menu and activate.

I have the same camera and the only way to do this is to first, Make sure you have set the date and time correctly on your camera. Take a picture or, view picture you want date & time stamped. Press the circular 'Menu/Set' button. Press down arrow to playback mode. Press right arrow on 'text stamp'. Choose whether to apply stamp to single or multiple photos. Press 'Menu/set' to select photo to stamp. Choose which stamps to add. Date, time, age etc.. Press 'Menu/set' again and select 'Yes' in box. The only problem with this is that it will resize your photos to 3m, which can make them grainier if you took them at a higher res. Gillian