The LED042 is the complete module PCB + GLCD(with KS0108 controller).
The
LED044 is the firmware chip which provides a serial->GLCD conversion (which I think is what you are after).
You will have to make a PCB (or some kind of board) to 'talk' to the KS0108 based GLCD.
The LED042 Data Sheet shows the electrical connections. There are quite a few so don't bite off more than you can chew - as they say
As Ec says: try and get in the habit of providing links to Data Sheets or webpages to help others answer your questions.
One note of
caution. I have heard of several instances of people buying supr cheapo Ebay-sourced GLCDs to do a DIY LED042. And it goes wrong. A 'bargain' turns into a nightmare. And when they buy a branded GLCD it magically works .... is there a lesson there?
So, be careful with your purchases.