This is Acer Aspire 3024WLMi (hardware is same as 5024WLMi)
It's AMD socket 754, chipset is ATI x1100 (xpress)
Acer utility shows this string in motherboard info: LXA48050616060949DKS00
BIOS Agent:
Program: eSupport.com BIOS Agent Version 3.55
BIOS Date: 12/19/05
BIOS Type: Phoenix
BIOS ID: Acer Aspire 3020 BIOS Version: V1.20
OEM Sign-On: None
Chipset: AMD 1100 rev 0
Superio: Unknown
OS: WinXP SP2
CPU: C0 1800 Mhz MAX: 2500 Mhz
BIOS ROM In Socket: No
BIOS ROM Size: 512K
Memory Installed: 512 MB
Memory Maximum: 4096 MB
Memory Slot 01: 512 MB
Memory Slot 02: 0 MB
Please help
