Vertcoin Mining on 2 x Radeon HD 4550's

[avp2306]

Got 2 x Radeon HD 4550's sitting around doing nothing. I'm able to run GuiMiner-Scrypt-Alpha for Litecoin mining just fine, hashing a whopping 10Kh/s per card .. whoohoo! .. I know..

However I could not get Vertminer to run on those cards yet. VertMiner tells me its unable to find a device.

Any advice on how to get these 4550's mining VTC? Any specific VertMiner settings for these cards ?

Should I try other miners (not sure if there are other options besides VertMiner) ?

Thanks in advance!