델파이에서 MySQL를 사용하기 위한 DB관련 컴포넌트입니다.
사용법은 압축풀련 /doc폴더 안에 자세히 설명 되어 있군요.^^*
TZMySQLDatabase - component for connection to the MySQL database
TZMySQLMonitor - component for tracing of outgoing queries
TZMySQLQuery - component for perfoming queries to MySQL server
TZMySQLTable - component for representing SQL query as a TTable
TZMySQLTransact - component of server transactions
등등...

설치법은 일단 옮겨 봅니다.

WINDOWS INSTALL
1. Unpack the archive with components
2. Copy libmysql.dll and/or libpq.dll into your
  Windows/System directory.
  For PostgreSQL v7.2, copy libpq721.dll over libpq.dll
  in windows/System directory and modify Zeos.inc to define
  parameter PGSQL72.
3. Edit Zeos.inc file. You may set there you language,
  maximum quantity of supported memo fields, etc.
4. Add to Delphi Library Path pathes to XXX, XXX\common, XXX\dbase,
  where XXX - ZeosDBO directory.
5. Compile and install library in Delphi 3.0, 4.0, 5.0 and
  C++ Builder 4.0 with the same version of dpk file.
  Install dpk files in the next sequence:
  ZCommonXXX, ZDbwareXXX, { ZMySqlXXX | ZPgSqlXXX | ZIbSqlXXX
  | ZMsSqlXXX | ZOraSqlXXX }