word choice - Which is correct: "with regards to," "in regards with," "regarding"?

I have been using the following phrases but I am still not confident that they are grammatically correct and sound right:

• "in regards with something"


• "with regards to something"


• "regarding something"

I have also heard/read people using an arbitrary combination of the above (e.g. "in regards to"). Are those correct? If yes - are they equivalent or the usage depends on context?

Answer

I have been using the following phrases but I am still not confident that they are grammatically correct and sound right:

"in regards with something"

"in regard to" is the right way here.

"with regards to something"

This is OK. Somehow I have the feeling that "with regard to" is more normal though. Paul Brians seems to back this up.

"regarding something"

This is OK, e.g. film title "Regarding Henry", etc.

I have also heard/read people using an arbitrary combination of the above (e.g. "in regards to"). Are those correct? If yes - are they equivalent or the usage depends on context?

It's much easier to answer your question if you put in some examples you've seen. Anyway I hope the above is enough.

Note that there is a completely different usage "regards to" as in "give my regards to old Broadway and tell them I will soon be there" etc.