Building workflow forms with just Windows Sharepoint Services (WSS 3.0)

We are happy with WSS 3.0 and the only thing that we can't do is that buil开发者_运维技巧ding a workflow form.

We are thinking to use custom ASP.NET coding as in separate stand-alone page or maybe as a webpart. We heard about InfoPath but this is not available unless upgrading to MOSS.

I am just wondering what other people have done in regards to this. MOSS is not really an option at this stage.

I am appreciated your feedback.

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We've done a number of custom ASP.NET pages, it's pretty easy when you get the hang of it