Thousands of Iowans are lining up to find out if their treasured possessionsare junk or gems as the P-B-S production “Antiques Roadshow” opens today atthe Polk County Convention Complex in Des Moines. Chris Jussel is host ofthenationwide program.People can bring in any two objects they think may be valuable and have oneof 70 antiques appraisers tell them what it may be worth. Jussel says he’dbe amazed if there WASN’T at least one extremely rare and expensive itembrought out of an attic or garage.Appraisals at the Des Moines show will be videotaped and aired on P-B-S at alater date. While many antiques may LOOK like they’d be valueable, Jesselsays looks can be deceiving. He says some items aren’t fakes exactly, butare what’s called reproductions.Admission is by ticket only. Tickets are free. Sessions today & tomorrow runat 8 and 11 a-m and at 2 p-m. Jessel says 2-thousand advance tickets forSaturday’s 11 and 2 o’clock viewings will be made available today at 10 a-m.