I have win2003 x64 and i use previous release of conquest. But it seems you totally broke odbc support in newer versions.
If I use dgate64.exe (4 265 984 bytes) from previous releases it works well with odbc. When i try to use 1.4.19 dgate64.exe it does not work. It does not see odbc data source. It cannot create it after delete and re-initialize.
I decided to update also bacause of old version is always hangs with an error Erro dgate64.exe,version 0.0.0.0, module msvcrt.dll, version 7.0.3790.3959,address 0x0000000000051d71. So i need to restart the server and it hangs over and over again. This is not permanent error. After restarting the server it works well for some time (maybe some monthes).