This is the MySQL interface of Free Pascal. You need at least compiler version 0.99.8 to compile this. To Compile under Linux - You must know where the mysql libraries are. - You must know where libgcc is. The units come in 2 flavours: - mysql3*.pp : version 3.23 of mysql. - mysql4*.pp : version 4.0 of mysql. These versions are substantially different. Both these things must be set in the Makefile. After that a simple 'make' and 'make install' should compile and install everything. You can test with 'make test', but this supposes that there is a 'testdb' database available. If not, you must run mkdb databasename testdb databasename rmdb databasename manually. You need create permission on the database for this to work. Win32 users: There are multiple .dll files circulating around. you should fix the statement mysqllib = 'libmysql' in the mysql unit, so it matches the version you have. Enjoy ! Michael.