Don't know cause never try out that hardware, but, ...

1. backup your actually Extensions folder
2. apply Zeph's updater to ComboUpd. the cehck out about some prerequisites and pply update.
3. install the custom (osx86) kexts, those ones that u need.

IMPORTANT: Backup all your're data first

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CPU: Intel Pentium Dual E2140 1.6 GHz. Graphics: Intel(R) 82945G (128 MB). Board: Asus P5GC-TVM/S Chipset: Intel Lakeport-G i945GC. HDD: 232 Gb S-ATA Samsung
Version 10.6.2 32bit. Kernel: Vanilla. Audio: VoodooHDA 0.2.2 with prefpane. Video: Stock GMA. PS2 fix: VoodooPS2
USB 2 not working

Acer Aspire 4530-6823
CPU: AMD Athlon™ X2 QL-62 2.0GHz. Graphics: Integrated GeForce® 9100M G. Chipset: nForce® MCP77MH.