visual basic download and Overwrite Existing Files

[equi]

anyone can help me out here i need a code i can use to make a program with VB.
im a noob at this but i dont need that much code i have see it on youtube how to download a file from the internet, but i dont have the code for the overwrite the existing file. Could not find it there. anyone can help me out with this?

this is the part to download the file

simple code