Kevin Federline is wishing his ex-wife Britney Spears the best after her DUI arrest ... and he hopes she'll makes some changes in her life. K-Fed's attorney, Mark Vincent Kaplan , tells TMZ ... "Kevin hopes for the best for Britney and if help is necessary, he hopes that she will neither resist it or those who are attempting to work with her." Kevin's lawyer says they've spoken since Britney's Wednesday night arrest and says they don't know more than what's been reported in the media, but adds .