Presario 5441

By default I have come to own a Presario 5441. I'm looking to set it up for the kids to use when they visit. It had a bunged up Windows XP Pro installation, so I formated and started over with Windows 2000. Looking to put it on a wireless home network.

Specs:
CPU: AMD K6-2 472 AFX
RAM: 256 Mb (2 x 128 Mb PC100) I think this system maxes out at 384 (Bios x.xxx?)
HD: Seagate ST39421A, 8.45 Gb
NIC: None yet, looking to go wireless, 802.11G though if possible.
Video: On-Board
Audio: On-Board
USB: None

The younger (3-7) kids play mostly on Sesame Street/Disney/Noggin type web sites, Older ones (8-11) play Runescape, Youtube Videos, and general age appropriate online games. Email is all online, Yahoo!, GMail, etc. I would also like to load Office 2000/XP to ease them into doing homework on it.

Questions:
1. Am I correct on the RAM limit?

2. What is the largest hard drive it will accept with out an overlay?

3. Can the CPU be upgraded?

4. Spotted some pins that look like they might be for a USB header(?) (which leads to question 5 below.)

5. Where can I fine a motherboard diagram to identify the correct settings, locations and ID for some of the items I can see on the mother board but do not know what they are?

6. On the same note, where can I find full documentation on this model? Went to the Compaq web site but did not readily find any in depth information.

Any information or references would be greatly appreciated.

KMC