It usually sorts itself out. Just keep her involved and with you - don't keep her by herself in a crib. If you can wear her in a sling or other baby carrier, then even while she's sleeping during the day (and babies do need their naps! Forget about trying to keep her up during the day - at this point, she's going to be sleeping most of the time, anyway, and it shouldn't interfere with her night-time sleeping), she is learning that activity is for daytime. The only thing I've found I can't do with the baby in my carrier is pulling laundry out of the top-loading washer. Cooking is supposed to be off-limits, too, but I've found that if I'm very careful and keep turned away from the stove, it's pretty much okay, too.
The Ergo is great. Worth every penny. We use it in the house and while out around town. Use an insert till she's 4 months. THe Ergo is extremely easy to put on and use. A sling is okay for the first couple of months, but make sure you get a very well padded one. I'd advise against any wraps that are long. They're a hassle.
Also very helpful: if you can keep her in your bed with you, her body's and brain's rhythms will quickly come into sync with yours (this also makes nursing super easy - you just sleep through her feedings). This is one of the best ways I can think of to get her to sleep more at night.
To learn how to co-sleep safely, check out askdrsears.com or read the Sears Baby Book (helpful for all baby-care topics!!) or The Sears Nighttime Parenting Book.
Of course, lavender in the room at night is good, too.
L.