Tiger Wood’s stunning new girlfriend Alyse Lahti Johnston’s wealthy step-father has admitted that his daughter was friendly with Elin Nordegren BEFORE she started dating the golfing superstar, RadarOnline.com can reveal

Scottish exile Alastair Johnston is a boss at Tiger’s sports agency IMG and actually lives next door to the cheating golf legend in Windermere, Florida, where Elin and her husband had their famous Thanksgiving  meltdown before his numerous infidelities became public.

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Now 22-year-old Elin ‘look-a-like’ Alyse has been spotted on the golfing superstar’s yacht and the pair has been spending more and more time together recently.

Tiger Woods has been seeing 22-year-old Alyse Lahti Johnston, but the beautiful blonde told a friend she's only interested in one thing from the golfing superstar -- a good time!

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That's what RadarOnline.com learned exclusively from one of Alyse's pals and former classmates.

Rachel Uchitel is going into business as a private investigator in New York Monday, just days after RadarOnline.com reported she's graduated from a P.I. academy.

The former nightclub celebrity wrangler is possibly the best-known of all Tiger Woods' women, although Uchitel always denied they'd had an affair.

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Uchitel says "cheating spouses" won't be cases that interest her.  "I want to solve cases for the underdog, for people who don't have a voice," she told The New York Post.

Last week Uchitel completed a 10-week course at DGA Detectives Academy, with one of the highest final exam scores in the school's history.  That made owner Dale Gustafson decide to hire her for his agency's office in New York.

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"I love the Glock," Uchitel says of her choice of guns.  She also favors the .357 Magnum.

Uchitel is now in the process of obtaining her PI license in both New York and California, and said she eventually wants to open her own company.

"I'm thinking of calling it Puma PI," she joked.

Ironically Uchitel is a few months older than Tiger.  His latest fling, Alyse Lahti Johnston, is just 22.

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Alyse Lahti Johnston was busted on suspicion of DUI, RadarOnline.com is exclusively reporting.

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Alyse was arrested last October 9, 2010 by the Orlando, Florida PD.

When charges were actually brought against her on December 10, Orange County, FL court records show that Alyse -- represented by a high profile Florida attorney -- was only charged with Reckless Driving, a first degree misdemeanor.  Alyse pleaded no contest to the charge and adjudication was withheld pending her meeting several conditions.

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She was ordered to complete a DUI Counter Attack School and a Victims Awareness Program.  She was also ordered to obtain a substance abuse evaluation, and report to probation.

The case went back to court on January 21, 2011, with the final charge being "Improper Change of Lane -- Pulling in front of vehicle."  That's a simple traffic infraction, and the case was closed.

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As RadarOnline.com reported earlier today, Alyse, 22, began dating Tiger Woods several weeks ago,

She grew up in Ohio and her biological father is former St. Louis Cardinals pitcher Jeff Lahti.  Her stepfather Alistair Johnston is a member of the board of IMG, the giant sports agency that reps Woods.  He and Alyse's mother spend half the year at their estate in Windermere, Florida -- the exclusive enclave where Woods also lives.  It was that address Alyse gave cops when they busted her.

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She graduated from Ohio State, is now taking classes at Northwood University, and a source tells RadarOnline.com that the athletic Alyse is also training for the LPGA Tour.

"Her stepdad hired a coach for her," a source tells us.  "He introduced her to Tiger."

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