integrating NAS

Hi there, i’m having issues with connecting my NAS to a desktop pc. At my home home office I have an desktop PC, which connects wirerlessly to my router. My WLAN gets an IP adress (192.168.2.4) from my router an is working fine. Now i want to connect a NAS (TS-453 pro) which has a different ip adress / range (169.254.11.248) (assigned by itself i guess) to that same desktop. How do i configure my ethernet connection so that i can connect to my NAS and share my wireless internet connection with that NAS. (I don’t how to connect to my NAS other then by ethernet)