Troubled starlet Lindsay Lohan has allegedly asked pals to smuggle sleeping pills into her rehab centre, it has been claimed.Starlet Lohan recently entered Malibu's Promises clinic for a 30-day stint after a highly publicised car crash.But Lindsay is not taking her rehab seriously, the National Enquirer magazine claims."Lindsay managed to keep her Blackberry and is texting her friends - begging them for sleeping pills," an insider told the Enquirer."She's just playing at getting sober."Lindsay, 20, has reportedly complained to her friends that she can't sleep in the clinic, but they have so far refused to co-operate."She was supposed to share quarters, but she insisted on having her own private room," the pal added."And while group therapy is a huge part of substance-abuse recovery."Lindsay went only once and then refused to return."Another pal insists that Lohan is using her time at the clinic to plan her 21st birthday bash in Las Vegas.The actress reportedly plans on taking over a whole floor at Caesars Palace casino for her party in July."Lindsay's using her month-long stay to plan her 21st birthday party, scheduled to take place days after she's released," the friend claimed."Lindsay's number one priority is her birthday bash - and she's not planning a sober party."