A general rule of thumb is to use the (heavier) web controls only when their
extra features make it worth using them instead of the lighter-weight, less
functional HTML controls.
I've written a more detailed comparison here:
http://SteveOrr.net/faq/3in1.aspx#HTMLvsWeb

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I hope this helps,
Steve C. Orr,
MCSD, MVP, CSM, ASPInsider
http://SteveOrr.net
> Can someone tell me the rule for when to use a standard server control
> vs using an HTML control on an asp webpage?
>
> Thanks