How can I keep my hyperactive preschooler from running wild?

Only mom's with hyperactive children understand each other :)
A little something from this babycenter link :)

link

Have realistic expectations

Recognize that your child will be happiest playing in a child-friendly environment where she can run around and touch things, not shopping in a hardware store or going to an art museum. Understand that she won't be able to sit or stand quietly for long periods, so that asking her to wait in line or sit in an office waiting room may be asking too much. Remember that she won't have much patience for sitting quietly during activities that don't interest her, so sitting at the dinner table or even in preschool circle time may be impossible for more than a few minutes. Finally, know that she may not be able to resist temptation, so keep markers and scissors in a drawer she can't open.

Make sure she gets enough sleep

Any child who is tired will be irritable and "wired" during the day and will be harder to deal with than a well-rested child. If your child is grouchy or sleepy in the morning, she needs more sleep at night.

Keep your rules simple and concrete

For example, tell your child, "When we're in the parking lot I want you to hold my hand" or "You can't throw balls in the house." Always, always, always be consistent about enforcing the rules. If you're not, your child won't be able to figure out how you expect her to behave.

Get some advice from an expert

If you're already doing these things and your child is still acting out a lot more than other children, you may need a fresh approach. Seek out a counselor who can spend time with you and your child and give you some advice on how to manage her behavior. Talk to your child's preschool teachers, your local childcare resource and referral agency, or your child's healthcare provider.