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Scream 4 star David Arquette has had a rough couple of months...

After announcing his separation from wife Courteney Cox late last year, Arquette ranted about his personal problems on Howard Stern's radio show and eventually wound up in rehab.

But now the 39-year-old actor - seen above grabbing breakfast and running errands in West Hollywood this morning - is back and ready to make things right.

Oprah Winfrey's interview with Arquette, the first since he completed his stint in rehab, airs this Thursday, February 24th.

Interesting to note, the episode's original guest was supposed to be Michael Vick, who pulled out at the last minute because of unknown "personal reasons."