[3.5] Archer/Bow-wielder build help

[Grod_The_Giant]

Doesn't an Artificer need down time in order to be strong?

They don't have to; they can rock persistomancy with infusions alone. Spell-Storing Item lets them cast any spell of up to 4th level for a tiny amount of experience (and later, Concurrent Infusions lets them do it for free), and Metamagic Item lets them add Persistent Spell.

EDIT:

For a simple-but-effective archer, I'd go with a Bard. Go for a draconic race like Silverbrow Human (Dragon Magic) and grab Point-Blank Shot, Precise Shot, Rapid Shot, and Dragonfire Inspiration (Dragon Magic). Pick up Inspirational Boost (CAdv/SpC) with a spell, trade Suggestion for Song of the Heart (Eberron Campaign Setting), and buy a Badge of Valor (MiC) or two, all in the name of boosting Inspire Courage. (If Tome of Battle is available, look into Song of the White Raven, but it isn't necessary.) At the start of the battle, activate Dragonfire Inspiration and cast Inspirational Boost; activate a Badge the next turn, and you'll be rocking five or six d6 of fire damage on every attack. While you're at it, a Bow of Songs gives you ranged smiting, and a Crystal Echoblade gives you more bonus damage while performing-- you can ask about getting that enchantment on a bow instead.

If you want more martial power at the expense of some spells and energy damage, Paladins can pick up Bardic Music in two ways-- the From Smite to Song feat, and Harmonic Knight substitution levels (both from Champions of Valor).