TheStreet.com's Beat the Street contest kicked off another week Monday, and PKTTT1 ran his $250,000 seed money up more than 10% to take a $2800 lead.The all-long portfolio included the ever-popular solar stocks: LDK Solar ( LDK); Canadian Solar ( CSIQ); China Sunergy ( CSUN); Solarfun ( SOLF); and Energy Conversion Devices ( ENER). At $273,070, Smile44U stood in second place, followed by Farris727 at $$272,344, Monkey at $271,742 and MarkDeangelo at $271,735 in the top five. Interestingly, Monkey's gains came on longs of four airline stocks and one ag name: UAL ( UAUA); AMR ( AMR); Northwest ( NWA); Delta ( DAL); and Agria ( GRO). Under the rules of the weekly contest, players will be able to switch one of their five stocks between Tuesday's market close and Wednesday's market open. Contestants looking to research their changes should take a look at Cramer's Mad Money Recap; Stockpickr's Beat the Street forum; TSC Power Stocks; and 'Mad Money Lightning Round'.