It's amazing what you can achieve with just using the layer effects in Photoshop 5... Take a look at this picture and tell me if you can see a glass spheroid... I don't....

This is how the picture would look like when you hide all layer effects....

Well... let's add some layer effects then...

In the first layer I applied several layer effects and the basic shape is just a green filled circle as you can see here.

These are the layer effects I used in the first layer on that green circle. First Inner glow....

Inner shadow....

Bevel and Emboss...

...and drop shadow

Layer 1 should now look something like the picture here to the left

Mark the shape and add a new layer. Contract (select/modify) the selection with about 5 - 10 pixels. Hold down the Alt key and use the elliptical marque tool to create a selection/shape like the one you can see in the top of the spheroid.

fill it with a light green shade and set layer opacity to 8 - 10 %

Then apply the Layer effect Outerglow with settings here to the left....

Add a new layer and create a small oval with the elliptical marque tool, fill it with white and rotate it slightly to the left.

Apply the Outer Glow effect on this layer and set the opacity to about 50%

Add a new layer and create a smaller and narrower oval with the elliptical marque tool, fill it with white and rotate it slightly to the left.

Apply the Outer Glow effect on this layer and set the opacity to 100%

Copy that oval shape and paste it into a new layer. Apply the Outer glow effect with these settings and set the layer opacity to 25 - 30 %

And this is how it would look like when you're done.... no filters, no plugins... just the layer effects and layer opacity....

Pretty cool..... :-)