I'm going to sound wacky here but bear with me.
First of all three questions...
What do you want to take pictures of?
How much do you want to spend?
How often is the camera going to used and will it be used in any specific places (i.e dark/ muddy camp sites/ mountains)?
Assuming the answers to this point to Canon (90% of the time Canikon is the way to go) you have three options open to you.
1 - A 350D/400D - fine for summer pictures or general purpose use. Might be better than other older xxD models at high ISO.
2 - An old 10D/20D. Sounds silly but so long as you won't be printing bigger than A3 and it high ISO sensitivites don't bother you then you'll get a better AF system and better build quality and a higher frame rate.
3 - Finally if your going to push the camera harder in several directions you will have to look at getting more funds together 450/500D or 30/40D.
Now then, now you have to pair the body with a lens. I would recommend getting one of three lenses and then pairing it will another if applicable.
Tamron 17-50mm or similar. Good general purpose and should be fine in lowish light conditions, be great if the body works well at high ISO.
Kit lens - 18-55 slow lens but fine outdoors from spring till autmn.
A prime lens (cheapest and highest IQ) - 50mm f1.8/30mm f1.4. Say you photography is based around landscapes or sport but you want something for indoors and portraits, this is probably your best bet especially if your wanting to take images after 9 o'clock of people.
Then to finish your kit on a budget.
Look at either the 11-18 tamron or sigma 10-20 if your more lanscapey.
Get either a 70-300 or 55-250 if your more into sports or stuff further away.
Or if you didn't opt for a zoom in the first catorgory you could consider getting one now like the 17-50/17-70 and so on.
Then accesories are simple 8gb memory card plus 4gb back-up card. A bag (shoulder if you like to blend in more, backpack if you want to carry more). Spare battery.
Then the more optional things are (these are more likley to be seen in landscape kit) -tripod perhaps the manfrotto M-Y series or if you can stretch to it the 190's. A circular polariser. Then if you want to complete everything some ND and ND grads. If your more into portraits/indoors get a flashgun.
Hopefully that helps, the forumers are probably going to be able to give you more informed advice if you can give us a few more details.
Oh and sorry to th other photogs who I may upset with my very generalised gear list. I know some impressive landscapes are taken on telephoto's and likewise great shots of sport on ultra-wides. But as a general rule of whats popular I thinks I've made fair sterotypes.