Hi,
you are slow with informations:
IAre you talking about a "high density 15 pin d-sub"?
I think it´s not asking too much:
Maybe you could give additional informations: THM, SMD, low profile..
You should have already done the research on this connector.
The problem will be: If you now choose a footprint for a connector, but it is not available.... or too expensive.
Therefore I recommend to first look for available and suitable connectors, the manufacturer name, the datasheet, the exact part number...and then ask for the Altium file.
Klaus