gchiu: ...Haven't got any hardware yet though .. not sure what I will need.
If you want to send faxes, get a Linksys SPA2102 otherwise just get a Linksys PAP2T and save a few $.
Either of these devices will get you going with 1 or 2 VFX lines for $150 max (PAP2T should be about $35 cheaper).
Until Asterisk is supported, getting one of the above Linksys boxes will be your best bet.