Hello !
this is not the standard method (via bpg), but I like it
I'll try to keep it simple:
1- download and unpack the zip contents to a directory that you can remember

(I like to put it under delphi path\lib\zeos)
2- open delphi 7
3- using the file-open menu, open the folder you unpacked the contents and then the file \packages\delphi7\ZCore.dpk
4- click "compile" button and wait a bit
5- close it
6- repeat the steps 4 and 5 for the files ZParseSql.dpk, ZPlain.dpk, ZDbc.dpk, in that order
if there's and error with ZDbc compiling, note that the line before the error contains an ";" where it should be a single ","
switch it, if needed
7- do the same for the file called ZComponent.dpk, but now, after compiling, click on the install button
a message will popup telling you about sucess, or not
8- close all that stuff and open tools-environment options (in delphi IDE).
there, select the library sheet (on top), and then click the three dots button "..." at "library path" line end
9- click again in the three dots button, now there's only on in the screen. after, select the folder you unpacked all the stuff, then keep going until \packages\delphi7\build
10- select it, click in sequence: OK, Add, OK, OK
11- close whatever you had open and start a new project
a tab named "zeos" will be in the component pallete now
12- have fun !
vinny, if you can't install at all, add me at msn, may be we could talk portuguese or something
[]'s!