Sigh. Here we go again.
Assuming you're talking about the 15" combo drive, that's $1,999.
Dell's Home and Home Office section doesn't have anything that's comparable to the 15" PB, so let's try Dell's Small business Notebook advisor - select the 15" and 15.4", 4-6 lbs, we get just the Dell Latitude D505, base price $823-$1251 (after 20% off). Don't want a Celeron so pick the most expensive one and configure it: Use 1.6GHz P-M (faster than 1.5GHz P4) WinXP Pro (+$60), 512MB 1 DIMM (+$110), combo drive (+$30), 80GB HD (can't select anything larger than a 60GB, but you can get two 40GB HD, +$278), Dell wireless b/g (+0), WordPerfect (+49), no port replicator (-$179), no case (-$59) - comes to $1482 after 20% rebate off $1852. That's with shared video memory, no other software, no BlueTooth and 10/100 baseT ethernet. It's more comparable to an iBook than a PB.
How about HP/Compaq? Let's take a look at the nc6120 - hard to customize, but comes to about $1500 with similar specs. Again, more comparable to an iBook.
How about IBM? Thinkpad T42p
https://www-1.ibm.com/products/hard...ui/submitConfigSelection.wss?nc=1111543903888 - ah, this is better, more like a PB. It has 1.8GHz PM, 1600x1200 screen, gigabit ethernet and bluetooth, and wireless a/b/g. In many ways it has better hardware than the PB, but it's also $2900.
If you want to compare Windows laptops to Mac laptops, you'd be better comparing with the iBook, unless you go for a really good top of the line PC.